i have recently been suckered into buying  '95 liberty gx wagon apparently in "excellent condition" thinking that even if i transfered the money into there account i could get it back because i hadn't sign a single thing after the mechanic had a look at it. nothing i can really do now...

so basically there is a whine/slightly raspy noise when in gear and under acceleration, half way between the sound of a stuffed wheel bearing and a diff thats about to let go
i haven't taken the car into possession yet so i cant really look too much into it myself but what are common problems with the 5 speed manuals that could cause this? and also what do second hand trannies go for? and does anyone have one lying around?
any help would be appreciated
cheers!