OK, here is what I put into the car. I used a Comp Cams XE274H cam. Recommended springs were 911-16 (single spring) but they were out of stock. Machine shop used 981-16 as they were available (373 lb/in versus 370 lb/in). Since the machine shop was doing the valve job, they machined everything to fit. The springs are single springs with damper.
The rockers are stock stamped rockers. I used three compete sets to come up with a set that was matched in length, distance to shaft, etc. Comp Cams lifters also used (I forgot the number, I'd have to go check the box).