Awesome. I sprung for a 950 hp holley e85 carb for my 426sb. What's cfm is your carb? What's your jetting like? And timing? Haven't taken mine to the track yet, just some street bashing!
My carb is a "750"dp, but I have read that these Proform main bodies flow closer to 830 cfm. Jetting 90/100 with my current air bleeds, I'm going to put in smaller HSAB because I've run out of bigger jets....timing, same as gas right now (34°) going to try a little more after I get the carb dialed in better.