340 muffler decision

This winters project is to replace the flowmasters on my car (70, 340 4 speed, stock manifolds, x pipe, 2.25 exhaust dia.).. The sound coming out of the tailpipes is awesome but while standing next to the car at idle I can hear the tin can pinging which drives me nuts. After 5 hours online (the rose bowl was boring) reading numerous posts listening to lots of exhausts on youtube I've narrowed it down to dynomax ultraflow or hooker aerochamber.. I was interested in the dynomax VT but read to to many issues about rattle... I found this thread while searching and thought that I'd share.. I wish i would have found this hours ago. http://www.midatlanticperformance.net/performance_forum/index.php?topic=321.0;wap2