My 79 bronco wears a pair of 16" glass packs, that I'm certain all the glass is long gone out of. Exits in front of either rear tire with chrome downspouts so the sound echoes off the pavement when you put the coal to it. Yes the radio was nullified with that modification, and the "free flowing" exhaust didn't free up any extra mpg for an 18 year old at the time. Gosh I miss that rig, gonna have to sink a few bucks in it when I get back home and get it looking good again.