Just wanted to get some feedback if I should blow my 350? It's strictly street, but I want that added beef. I've been looking at a Weiand 671, any good? One of the questions I have is what is the difference in the 1/2" or 8mm pitch? Are there any pro's or con's to each? Also, what other mods, if any, need to be made to accomodate one of the Weiand kits?

-gunz