:I have gotten hold of a good 5.0 block, crank etc. 84 or 86 model. Want to build it for one of my drag cars and use the C4 4500 stall converter with 10.5 bolt pattern. Is there a flex plate made with that pattern and the 50oz balance weight for the crank? Otherwise it will probably have to be custom made. Thanks for any help. P.S. I have the converter already in the car with the early engine setup and don't feel like spending another 800.00 for one to match the later crank and flex plate.