bad regulator

[captek]

I,am working on a 1990 c2 and have 60lbs fuel pressure on the needle.I know this should be about 30lbs,the car runs very rich,barely runs at all.I think Ive traced it to the fuel regulator,Question is whats the best way and fastest way to replace the regulator?I have rebuilt many of these engines and had easy access to the regulator,but never had to replace it while the engine was in the car.Thanks any help at all.Captek