Magnaflow and Flowmaster 50 series opinions and sugestions

[72 Copper C-10]

Hi Everyone,

I would like some opinions and suggestions on mufflers. I have a 72 k10 with a 400 sbc, The 400 has no modifications other than an intake and headers. I am wanting to do a dual 2.5 inch exhaust system, but I cannot decide on a muffler.

I have been looking at the Flowmaster 50 series because the 40 series is a little to loud and has more interior noise than I prefer. I have not heard a 50 series in person, but I have been around several trucks with the 40 series.

As for Magnaflow, I do not have much personal experience with. I would like something that has a nice deep tone at idle., and nice semi-loud, smooth tone while driving, with out wishing I had ear plugs to drive it across town. Any suggestions or opinions in case sizes would be great!

I would love to hear your personal experience, opinions, and suggestions.

Thanks,
John