I have finger fondled so many different heads it’s probably criminal, so I personally touched lead’s heads before he bolted them on. I’m going to the dyno in June (maybe I hope) and lead is going with me. I’m betting that by July his engine is out and ready to go on the dyno.
Then we will have hard numbers on my junk, with at least 2 different headers and maybe I’ll test a bigger ignition and see what I get.