Putting the 340 together and undecided on which manifold to use.The motor has just been rebuilt 20 over,9.5 Speed Pro pistons,.495 cam,using the stock intake and Thermoquad.Everything will look stock,except if i use the HP manifolds[i have both].First question,will i gain enough horsepower to warrent deviating from the stock look,and secondly,what would you people seeing this car at a show think to yourselves,nice car but wrong manifolds,or wow it has HP manifolds.I know its my car and do what i want,but opinions please.Thanks