Well I am going to put a 283 crank in my 350 and build a 302, i have a crank out of a 1962 or 1963 283, a 350 out of a 76 pickup and 60cc heads from a 1964 327. I know the crank journals sizes are diffrent and but i cant seem to find the spacers to go from a 2.45" main to a 2.30"??? Also I'm pretty sure i cant use the pistons or rods out of the 350 right??? basically I just need to know what all i need to change to make this work and possibly where i can get them