I'd opt to rebuild that 383 with everything you want in it.The crates have a cast crank and your 383 has a forged.You could build one nice 383 for the money it cost you for a crate and it would be different than all the 360's in countless new mopars on the street.My 2 cents worth.My 383 for my barracuda cost me about 1800-2k to build.906 rebuilt heads w harden seats,9.5 hyper pistons,balanced blueprinted,525 lift engle custom grind cam(recommended by CHryco Psyco).You can typically get engine parts cheap on epay.Got my hyper pistons for 125 bucks,brand new and most of the internal components except the cam.This way you can also say you had alot to do with building your own motor