I have a spare ps pump from a 88fj62 any words of wisdom in using this pump on my 76fj40 ps conversion. I am using a mini truck box for the conversion. I also have a ps pump from a tercel wagon that appears to be a workable soultion. Which way to go?

if its free, go for it, but think the sag pump is a better way to go, its cheaper, stronger and easily modified.

Go with the Tercel pump if you no longer have an air pump. It bolts on to the air pump bracket and the pulley will line up if you flip it over.