I am considering the purchase of a 1986 toyota supra turbo and I'm not sure if its an 1986 or a 1986.5. The reason I'm concerned about which one it is, is because I want to ad a couple of aftermarket performance parts if I was to buy it, and the only parts I can find ( and there hasn't been a whole lot of luck) are for the 1986.5. If anyone knows the difference between the two or of a place that has a wide selection of good performance parts please help me out.

if it is a mk3 body it is an 86.5.. also if it an original 86.5 and is turbo you're not from the US are ya ;)
most aftermarket performance parts are applicable to 86.5-92 7mgte
what parts are you looking for... there's tons of sites that do parts for mk3 supras :D

www.horsepowerfreaks.com
www.mvpmotorsports.com
www.bicperformance.com
www.935motorsports.com
www.jblmk3.com

quite a few... theres some more on www.supramania.com in the forums there are vendors threads which you can have a look at :)