I have an auto swap meet coming up soon. I need to know what block and crank to look for. Want to run 429/460 street truck project. will also be running what I brung at the 1/4 mile. Is there benefit in swapping cranks 429 into 460 block, or vise versa? I am running aluminum heads, dual quad tunnel? and spray. Not sure of all the exact details, but thats the direction i'm headed. My 390 and 400 are going in my stock rigs to refresh them. Thanks for all help, Dan