I have a 95 5.7l z71 and bought a set of Flo-Tec longtube headers. The truck has a 4" suspension lift that moved the front axle down. I think they might fit w/ a standard 2wd oil filter bracket but dunno if they will clear the front drive shaft. Help?

all you can do is test it out. Put it up to it and if it looks like it will clear, go for it.

You could try remote mounted oil filter(s). Here's a link to one at Summit:

http://store.summitracing.com/egnsearch.asp?N=700+115+319773&D=319773