hi,i'm new here. got a 2004r and converter a few years ago. came from a 85 monte and the guy said it had about 5000 miles since a rebuild and worked great. car got t-boned and i ended up with the trans. have not opened it up yet but it passes the eyeball test. i want to put it behind a 370 horse street motor. i rebuilt turbo 350's for about 15 years,but never a 2004r or other modern trans. in your opinion,what would be a must for this trans. to hold up on the street. thanks very much for your opinions.