I have installed 8 or 9 of them on alot of different applications, from mild 318's to two of them on my 9.70 et in the 1/4 mile 69 road runner, I guess I got lucky every time?? not saying some of them didnt take alot of tweaking and testing, but they can all be made to work good (without bog) with some patience and perserverance....or you can listen to the "experts" and buy one of them 100% perfect everytime out of the box holley that makes 100 more horsepower and sell me that eddy real cheap..lol

ok experts..flame away