there seem to be quite a few versions of the tale going around... last i heard they were produced by kids heart, but sold through nissan dealers. this is what they looked like (just a kouki 180sx with silvia front):
anyone who can read japanesse, please translate.
http://www.teamhinga.50megs.com/custom2.html
heres what a guy said on freshalloy:
"hi. my name is ken and i work for japanese drift magazine called `Battle Magazine`. i see some of you arguing about nissan produced sileighty or not. since i actually talked to some people in japan who made sileighty, i`ll give you the truth about sileighty.used car and custom shop `kids heart` planned and sold THE SILEIGHTY which PRODUCED by nissan. they were 500 limited.
the guy who had 180SX crashed his front end and he found silvia face. so he just used silvia front end to fix his car. maybe this is how sileighty started.
BUT this is true that MR Takayama from `kids heart` did plan and sold the sileighty which produced by nissan.
i hope i made it clear for everyone.
oh and some of you who needs evednece, call Mr takayama at kids heart at 011(int`l #)-81(japanese country #)-0568(kids heart area code)-24-1222
i forgot to write the important fact.the sileighties were produced by NISSAN DEALER. "
basically the sil80 ws produced by a nissan dealer, so not corporate nissan, but still nissan.
hope that helps some.
edit, found some more.
hers the officialy kids heart site:
http://www.kidsheart.co.jp/sil.htm
according to Boro240 on Zilvia"here is the Kidsheart site for the sileighty. they give costs, equipment, colors, date of manufactur (it claims may 1 1998), everything.
http://www.kidsheart.co.jp/sil.htm
interesting note is you could order one with a Nismo LSD installed as an option. this confirms the dealer made theory, as it is clearly stated on the site (if you can read japanese). and if you want it in english, babelfish puts it as "until now, as a new model car it did not exist." and "entrusts vehicle production to the NISSAN related dealer and sells as the new model car.'"
the kids heart shop sign:
and the end all arguement (off zilvia, by 808rps13):
"recently found a Sileighty brochure for sale on Yahoo Japan... starting bid was 5000 yen and was up to 6500 when i last checked (don't know what it finally sold for b/c unlike Ebay, once an auction is over on Yahoo JP you need an account to check on that stuff)... anyways, on to the pics of the brochure
haha, oh and "kizzu haato" = kids heart, you can also see that on the 2nd pic on the bottom of the brochure..."
looks pretty real to me, so the end seems to be that it was in fact an official Nissan product.