Alright guys, I know this has been done 18048432.017 times. But seriously...Who doesn't love mufflers?! I have dual 2.5" straight pipes from previous owner...need muffler suggestions. Have glasspacks w/ dual 2.5" on my K5...sounds good until you hit high rpms and it starts sounding like crap...All glasspacked V8's I've heard sound crap @ high rpms. So I'm looking for something loud and aggressive...Something really MEAN. Flowmaster original 40's are pretty cheap...How do they sound? motor is a 1970 350 btw..It's got some grunt. I just need mufflers for inspection.