Exhaust idea
 

So I'm trying to figure out what to buy for my exhaust. I'm thinking about some dynatech or arh headers into wireless cutouts into stock rest of the exhaust. I'd like it to be tame sounding with closed cutouts, and I'm looking for performance when I open them. Would the cutouts actually help with performance? Should I put them before or after cats?

Id go with a big body magnaflow to keep the noise down as far as mufflers go..the stock mufflers dont flow very well..put the cutouts after the cats..im happy with my ARH headers..they cost $$$ but they are nice for sure