[old Chevy guy]

I searched through some threads and came up with LMC but when I Look in their catalog I don't see the right combination of factors to add up to my truck. they list the front and the intermediate ok but the rears not so much. my truck is a 71 c20 2wd long bed small block engine and standard transmission with leaf springs and the Dana 60 rear axle. Under wo BB 3/4 ton 68-72 lwb it only lists with coil springs. Does anybody know if one of the other listings is right for this app? or what and where is the right place to look? Auto zone only lists with coil spring too and I cant figure if Rock auto has the right one either ,seems like you might need the part number.