Really depends on what performance and sound you are going for, but if you are just looking for any recommendation: I run a 212/218 low lift from Comp Cams with LS6 springs and a 2400 stall torque converter. With that cam/stall, headers, K&N drop-in, 3.73s, and full exhaust it puts 293hp to the dyno on 33s (tune is pretty toned down since I am selling and use it for a work truck). The cam/stall combo is perfect for a DD - its always in the power band, and still average 14mpg. Really fun setup, spins tarz, would highly recommend. I used to have 243 heads and a high octane tune...it was alot more fun.