Originally Posted by synolimit

Would z1's really matter? If I dyno again as is and put down 295/246 that I do, add our mani and it puts down say 10hp increase in the mid range where it counts and maybe a few up top so the peaks read 299/250, does another manifold need to be even mentioned if our mani shows goods gains and is half the cost or even less with better porting done?

The vender thing I'll have to talk with the owner on. I might just say, here's their website. Call or go there or mail your stuff in to get done. Wouldn't be any different than saying Discount Tire did a great alignment for me, go see them.