I run a 14-6 on my Coronet w/a 440. My manifold came with the mods that are in the MP Engine Book.I ran a stock setup also but w/ my setup the 14-6 works fine although it took some figureing out. It's been on the car for 4 years. I use mechanical carbs w/ 50cc pumps in the outboards. The motor has 10.7 cr w/ a small hyd.cam.My best 1/4 mile et is 11.03 @ 119.7, but I usually run 1/8 mile, and that best is 7.00 @ 98.2. I got the setup because I was told it would never work, and it looks cool.