buying a supra

Hey, ive been looking at this 84 celica supra for a while and I fianly have decided that athats the car i want. I'm going ot be taking it for a test drive tomorrow and then down to a shop to have it checked and i had a couple questions i havent been able to find answers for

Whats size engine is it
How much hp does it put out
Also what compression should it have
and what els should i look for so i dont get totaly ripped off and have to pay like double in just fixing it up, cause i just dont have the money

thanks