I found 3 Z's i might purchase...one is a 84 turbo in very good condition and another is a 90 TT for 4 g's but I haven't seen it yet and that's a little low...there both 5spd but I need some expert advice...which one should I get? The last one is a 91 TT for 2g's and the guy removed the engine and he has all the parts but he said he was loosing psi...can someone help me?