[Vortec350S10]

well I ran my camaro with the stock log shaped manifolds when I first put the motor in and later once I was ready for my real exhaust swapped the manifolds for Ceramic coated Shorty Hookers and it was an incredible difference. I would say the switch from manifolds to shorties is worth more power than from shorties to long tubes. Yeah the long tubes may give you a little more bottom-mid range torque, but smoothing out the path coming right out the exhaust ports is what I think is important- I mean air doesn't like making sharp 90 degree bends. And by the way those hooker shorties fit excellent, and I would recommend them.