Rear control arms

[toothenator]

I'm starting to turn my 88 c1500 into a performance street truck and the first step is building a solid rear end. I plan on using the stock 8.5" 10 bolt but I plan on converting the suspension to a coil over set up and mounting some upper and lower control arms to the differential/axel housing. Since the rear end was not originally equipped I'm having a tough time finding them designed for the truck. Any suggestions other than just custom fabbing some adjustable ones in??