Mike the guys name is SID this is his site:
http://droppedaxles.com/ pretty cool guy. he just dropped a axle 4" for me this weekend and i should be getting it next week. $300 with your core or $350 without.
and these are the 5" lowering blocks for the rear i found:
http://store.gaugemagazine.com/index.asp?PageAction=VIEWPROD&ProdID=1690 although i'm probably going to just make my own blocks and use long u bolts, and save the $80 bucks for something else. on the front i plan on taking off a few leafs to get my desired 5" front and back.