race car mufflers

Does anyone still use glasspacks? They were really popular back in my high school days I was always a straight pipe kinda guy I dont think I've ever actually paid for a muffler. Anytime I need exhaust work I just get it straight piped but iv never had a performance engine. Usally low compression 318s aren't all that loud straight piped

HERE ya go

The drone with the Dynomaxers on my 11/1 360, seems directly related to cruise rpm.
mine was from 900 - 1300 rpm, so any time it was idling, it sucked