Family car, so im going with qtp manuals, as opening them up will be a rare occasion. Also have the option to bolt on the electric valve down the road. Took a quick look under the car, I'm thinking I'll have room right after the cats/o2 sensor. I know I will loose a little performance here with lost back pressure, not concered about that, yes my only objective is to be loud and obnoxious. Will I throw a code this close to the cats? Anybody done this? Pics? Better ideas?