Amen,my favorite performance mufflers are hooker aerochambers (for pontiac and other brands that need more help getting a good engine sound lol) and ultraflows. To the op I had a conversation with tti about switching to the 1 7/8 headers not long ago (I have a 410 with trickflows and dougs headers) and there was no problems.If I remember correctly they have a couple sets on engines with tfs heads.
