There's quite a few posts about both exhausts on the site, have you searched?
Oh, don't be such a spoiled sport.
Where's the community in a search function?
I want some boom tubes myself, though I'm concerned about being too loud. Right now I have a full Termi kit w/out db killers on my S4RS with open clutch and open belts, and it's too loud for my tastes.
My other concern would be ECU map issues. I'm more clueless about those than I am searching for info on the DMF.