There were 394 Lava Orange Mazdaspeed MX-5's (out of 1428 MSMs produced in 2005).
If you have any information on the location of a LO MSM please let me know by clicking on this link:
www.miata.net - Lava Orange Registry thread

You can find your production number by clicking here
2005 MAZDASPEED Miata Production Numbers





NUMBER NAME OTHER
6 Orange Ennismore, Ontario .
14 Deborah DeFelice Ladson, SC .
46 Shanna Jones Rock Hill, SC Sold to BabyTaz911
46 BabyTaz911 TN Tri-Cities Miata Club
76 Sean Ebron Plantation, FL .
82 JB05LOMSM La Grange, NC .
85 Bunny McElwee Moncks Corner, SC http://www.lightweightmiata.com/kiki
117 Rowdymutt Raleigh, NCD .
119 Atsui Honolulu, HI .
136 Pug940 Severn, MD Sold to SpeedMX-5
136 SpeedMX-5 Los Angeles, CA .
139 SpeedMX-5 Los Angeles, CA Totalled
171 Rob Turner Mercer Island, WA Sold to Rocket Taco
171 Rocket Taco Shoreline, WA .
201 Paulies69 Columbus, OH .
225 Brian Frohnhofer Riverview, Michigan .
233 JimyLSeattle Seattle, WA Club Miata Northwest
270 . San Diego, CA .
276 Ann Jones Tucson, AZ .
312 05LAVAMSM Glendale, AZ .
353 Morgan Green Valley, AZ .
359 SpeedracerIndy Indianapolis, IN .
364 . Seatle, WA *** RIP *** Donor to http://www.miata.net/motm/2008/brandt.html
377 Tgunnerson Novato, CA .
389 Rhichard Lyons Littleton, MA Mass Miata Club
394 Robert Duncan Glendale, AZ Sold to FastGasCar
394 Vince G (FastGasCar) Gilbert, AZ .
408 Bob Retzer Dayton, Nevada sold to Bill Jimmis
408 Bill Jimmis Warwick, RI .
410 Ken Burr Seattle, WA .
420 Serge Levesque NB, Canada Maritime Miata Club
421 Donna Cantaloube Steilacoom, WA Car was sold to Auqurin
421 Auqurin Kirkland, WA .
423 JudyZ AZ .
427 NM MSM Socorro, NM .
430 Anticapp West Chester, PA .
441 ASF6 Anne Arundel County, MD .
450 Joel Gat Flagstaff, AZ LS3 engine swap
450 Skip Cannon Erie, CO Purchased from Joel Gat
457 Serys Colorado .
458 SDW201 Greenville, SC .
462 Jake96 Las Vegas, NV .
463 Madrat KT Charlotte, NC .
465 AZLava Mesa, AZ .
470 Frank CDM, CA SOCALM http://www.cardomain.com/ride/3038774
474 Laurabeth Sawyer Peachtree City, GA MX5Atlanta http://www.mx5atlanta.com/forums/showthread.php?t=31
476 Rudolf Oslo, Norway .
490 ASE05 Brisbane, Australia http://www.miata.net.au/chapters.htm
496 Keith Peterborough, Ontario http://www.cardomain.com/ride/302879
500 A Southern Gentleman Greenwood, SC .
504 Nik Naym Marion, NY .
507 BlackDbl9NB Sioux Falls, SD .
508 Chuck Sharp Butler, PA .
510 Quest06 Oviedo, FL .
529 William2K Carthage, TX .
533 Harrison Johnson Dripping Springs, TX .
540 TOY4EVERYSEASON Omaha, NE .
547 . Bowling Green, KY .
548 MaryZoom Cleveland, OH .
556 Kalishek Tulsa, OK LS3
563 TXBlue Saginaw, TX .
565 Want Austin, TX .
573 GasHead Houston, TX .
576 Mike Ringgenberg Glimber County, TX Sold to Gman14
576 Gman14 Watertown, WI .
582 Brandon Ward - BWARD Virginia Beach, VA .
583 DR.Miata Arlington, TX .
584 Jimbo San Antonio, TX Bluebonnet Miata Club http://www.mazda-speed.com/albums/JimboT/058_58.jpg
597 Steve Nashville, TN .
598 Revlis240 Los Angeles, CA .
600 Rolferde Milton, DE .
602 Ben Moser Cherry Hill, NJ .
604 . Massachusetts .
617 Ghost10mm Philadelphia, PA .
643 . Fort Lauderdale, FL http://www.cardomain.com/ride/2287695
651 . Lake Country, B.C. .
655 Ralph Goodwin Palm Bay, FL Space Coast Miata Club
666 Lavordre Orlando, FL .
700 CornDog Raleigh, NC .
703 KT8472 Chicago, IL .
735 Ex36 Durham, NC .
747 CWSPhoenix Chino Hills, CA .
750 . Bellingham, WA .
752 Wangerin / Svetki Chicago, IL .
763 SFCARBONE San Carlos, CA .
766 Dave Bowie, MD .
774 Javierf San Antonio, TX www.cardomain.com/id/javierf
781 Fresh NB Bealeton, VA .
785 Tim Smelser Indianapolis, IN .
799 Stevefromthezoo NE, OH .
800 Frank & Sue Rogers Burr Ridge, IL Windy City Miata Club
802 Turborascal Austin, TX Sold to CopperMSM
802 CopperMSM Raleigh, NC Sold to DJCarGuy
802 David Johnson (DJCarGuy) Dripping Springs, TX .
807 Bobpony San Jose, CA .
816 Ozbrock Orlando, FL .
818 DTSOL Santa Cruz Mountains, CA .
820 MiataMary Michigan .
836 Robfromdashwa Oshuwa Ontario .
857 Bruce Metcalf Fairview, NC .
873 Noblehops Tucson, AZ Sold to TheNewWazoo
873 TheNewWazoo Redwood City, CA .
879 Matt NB99Miata O'Fallon, MO .
906 Ehwilli Apex, NC .
915 Catsailor32 Lakewood, CO .
941 Agent941 Placerville, CA .
949 Joselle Los Angeles, CA .
951 Cristi Fairfax, VA http://www.cardomain.com/ride/3235134
956 Ron Mathews New Freedom, PA .
964 LavaLava CO .
968 Andrew Searle Edmonton, Alberta Wild Rose Miata Club
975 DHunt23 Chandler, AZ .
976 CatCracker New Orleans, LA .
979 Jack Monroe Stoneville, NC Sold to Pa Pa Roe
979 Pa Pa Roe Las Cruces, NM .
980 Kilticnot Chula Vista, CA .
982 Flcnplt Mukilteo, WA .
994 Bimmen325 TX .