Tunnel Ram 383

If your going to run Holley Vacuum secondaries make sure you buy the Duel Vacuum diaphragm kit so the secondaries are connected and will open at the same time. http://www.summitracing.com/parts/HLY-20-73/
Also get two spring kits so you can adjust how fast they open.
http://www.summitracing.com/parts/HLY-20-13/