the big saginaw has a higher volume flow so you dont have to rev it real high to maintain pressure. only really an issue when big tires are stuck between a rock or a downtown curb. it also gets rid of that remote reservoir thats in the way of battery #2 and usually has at least 1 leaking hose
the s10 pump is dumb, but only a few years ago a rebuilt zf pump was $300 so it had its time
the s10 pump is dumb, but only a few years ago a rebuilt zf pump was $300 so it had its time