Thanks, I am strongly considering getting the M1 intake and trying it out. As for the headers, the problem I have is that the Eddy's have angled plugs and anything less than 2" will not allow you to put in plugs. Trust me, I have learned this the hard way and now have a set of really nice ceramic coated 1 7/8 headers I can not use, (at least with these heads, I am sure I will use somewhere else).