I recently acquired a 1993 YJ from an idiot for $1000.00. I sold the hard top and doors for $1200.00, bought a 1989 Chevy 350V8 TBI/700R4/NP241. Ok here it goes. The jeep has been sprung over. I had the drive shafts and everything made, but when I go in reverse it makes a knocking noise. A...