A lot of people seem to like the Jammin pipes and Im not sure why, a buddy has pretty much told me to completely stay away from them and he knows his .21 shizzle like mad
From what I have learned, they are not fuel efficient at all, but the round smooth flow header is a great header to have but hard to find by itself, especially polished
I think you could maybe do good with an Ofna/Dyn 053 and be good to go for both mills.........The Ofna 053 pipeset has a slight edge over the Dyn 053 pipeset performance wise, but they Dyn 053 makes up for it in durability.