[ND_guy]

Yukon Jack Has a write up about hydroboost conversion. Just search for Hydroboost.
I did the swap last year. I used the booster, pump and hoses from an 80 1 ton van.
A few things to watch out for. Your power steering box has flared fittings and the tonner has metric o-ring fittings so either swap the box or make a custom hose from the booster to the steering box. You wiil also have to make a custom length pushrod from the pedal to the booster.

I would do it again in a heart beat, the pedal feels great

Make sure your hoses are in good condition. After my conversion the added presure swelled my original rear hose to the size of a golf ball and looked pretty scary.