The easy upgrade is to the PSC CB pump which will run hydro assist with ease and works with 4.0s and 2.5s w/ factory belts. I had to run the TC pump, which is just a hopped up factory version, due to the CB not working with a 5.2 and it runs my 8 inch ram ok. The pressure at idle isn't exactly out of this world but it is slot better than the factory pump and works wonders at 750 rpm and above. If I remember correctly the GM style pump is a P pump and can be grafted onto a jeep with a little work and some companies I believe make a bracket and pulley to use the P pump in jeeps.