84 t3 has a drum brakes up front, 85 has disc, the 84-85 is way different then the 86-87 models. i own an 85 and have had a bit of a hard time, but nothing to bad, in finding parts. i have come acrossed alot of the parts that are discountinued, but i eventually end up finding what i need somewhere wether it is ebay or the classifieds, or whatever. the 86-87 is atotally different bike, i havent done to much with them but plan on getting one sometime in the future. the tri-z i havent been to into, not saying i dont like the bike, i just have always been a kawi guy. but there is alot of guys on here that can help you out in the tri-z department.
1985 KXT 250 Tecate - kx cylinder, kx ignition, bassani headpipe, answer silencer, v-force reeds, 38mm airstyker carb, +2 franks swinger, raptor rear shock.
1996 YSF240 Blaster - maxxed out!!!
Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting "HOLY SH-T, what a ride!"