I a few months ago i bought a 86.5 non turbo 3.0 200 hp......for only $2400. ONLY 102,000 MILES great deal huh

Ehh, not to hurt your feelings but i see n/a's go for that or less all the time, i've seen good running turbo's go for that alot too. 102K miles is pretty low for a car of that age though. Anyway welcome to the supra community, to point you in the right direction here's lots of links to provide you with reading for the next few days :smile:
BHG FAQ- http://www.supraforums.com/forum/showthread.php?threadid=85914&highlight=BHG+FAQ
TSRM (your new best friend)- http://www.cygnusx1.net/supra/techtips.html
The biggest supra forum on the net- http://www.supraforums.com
Another great one- http://www.supramania.com
If it hasn't had the head gasket changed yet, then go ahead and retorque it, or have it retorqued to 72ft lbs. If it has any signs of BHG don't even drive it, just swap a MHG. Lots more to learn, but that's enough for now.