i gree with yellowcat on the thrush mufflers.i had a 74 c10 with a 350 put a set of headers on it with turbos and it sounded ok. blew one of the turbos up (completly destroyed it dont know what the hell happened)bought a pair of the long thrush,and a 2 1/4 universal dual kit from summit hooked them to the headers ran them all the way out the rear. very quiet under normal use .get into it and it cracked big time ,loved it. was my favorite ol truck.completly used it up. the 12 bolt is now in my 49 so it lives on.by the way i have flowmasters for the 49 still havent heard them yet.....dave
