For those interested; I put a '87 1500 Suburban front end in the '64, it was a truly easy swap, I took the crossmember and all components, including power steering pump and master cylinder/diaphram which I have not yet installed.; it bolted right in and was snug, had to drill one hole on each side and elongate one on either side. The '64 doesn't have the "notch" in the frame that the '87 does, Brothers makes a "convesion plate" the allows the boltup of the 87 powersteeering controller. Then, to convert the rear end to a 5 lug pattern I put in a '72 1/2 ton rear end on the '64 frame, total cost front and rear $415.00. PBO