Jason,
Several of the guy's around here have used an Edilbrock kit with their stock 351Ws and have had great success. They don't have any dyno figures but two of them told me that they had talked to Edilbrock people and they told them that with the performer kit I think it is, they should be getting around 400-430 horse and around 400 pound torque. I have driven one of the cars and it runs great. He is running a T-5 World Class transmission with a .68 split and 3:27 gears and it will almost keep up with my stroker in the first 2 gears. And it sure is easier to maintain than mine. So you might give Edilbrock a call and talk to them as one option.
Ron
