I just finished lowering my '63 SWB with 4" dropped coils in the rear and CPP 2 1/2" dropped spindles with 2" dropped coils in front.
I used these on the rear,
http://www.jegs.com/i/Belltech/146/8...791+4294829790
and these on the front.
http://www.jegs.com/i/KYB/575/344068...791+4294829790
Truck rides fantastic! Much smoother ride than
my 2013 GMC 1500 crew cab. I could not be happier.