I just picked up a 1985 xt turbo it has the ea82 engine in it but its running really bad I am sure its because the turbo is out. I want to get another turbo, maybe a bigger one? or a ported one? which turbos will bolt right up? I dont no much about these imports but I have tooken my 350 engine rebuild it and drop it back in, in my camaro. So how hard would it be to change out he turbo and stuff?