OK.

With a suggestion from a friend who used to be the Crew chief for this car back in the day when mcmillan just built it and ran it, he said to just run a 30 degree turndown on the muffler.

With kromerkraft headers you don't want any added restrictions after the headers, thats how they are designed. So having resonators and whatnot is not the best for HP, and this small turndown might be just enough to pass.