My 3.4 motor is shot. I need to put a new motor in my car and considering the problems I've had Im not sure if I want to put another 3.4 in it. Will a 3800 motor from a 98 or 99 Monte Z34 fit into my 96 Z34?

yep...no problem just need the harness and computer from the car it came out of for the sensors and such...heck why not even put in a supercharged drivetrain..then it will be one helluva z34....www.l67swap.com they go through the basics

I would go all out and do the L67!