1970 c20 dually

[tmg619]

Hey guys im new to the site and am needing help. I have had this truck just a little over a year now. I have stripped it down to the frame. Had the frame blasted and painted. I have a engine and trans out of a 2006 tahoe thats going in it. I am ready for assembly but the issue is the suspension. I wanted an ifs front suspension for this thing but they dont offer it in 8 lug. I could go 5 lug ifs but i have the cab lights on the truck and i thought it would goofy and take away from the truck if i didnt stay with the 8 lug. Ive been stuck at this point for a while now and dont know what to do. Also the rear end is i think the eaton which is hard to find parts for or convert to disk brakes. Any help would be appreciated. Pics coming soon.