I'll start out by saying I'm 16. My parents have a 1980 GMC Jimmy 4x4. I love this truck and to make a long story short it's going to be mine! I will be fixing it up, adding stereo, etc. I need some advice/guidance which is why I am here. It probably needs a transmission/transfer case because it doesn't shift right any more (2nd to 3rd) It use to throw u back in the seat when it shifted to third before we had the tranny rebuilt, now it takes forever for it to shift so I'm guessing they did a piss poor job (he said he put a shift kit and good torque converter in it). Also when we put it in 4WD we here a clunking noise, we're not sure if it's the trasfer case or the joints or both? I'm prob going to replace both so what does it have and what should I replace them with? A TH350 orTH400 and NP 205? I have more q's but I'll post em in a bit. thanks for your hwlp.