For rear ends your choices are the commonly found 63-later A Body with small and 73-76 large bolt pattern 7.25s, the 65-72 SBP 8.75s and the 73-76 LBP 8.25s. 65 small block 4 barrel intakes are not too common plus the use smaller mounting bolts/different bolt angle with the stock heads. Change the heads to 66-up, then you can use just about any LA 4 barrel intake. Good luck on your search!
