Help! Need exhaust advice for 69 k10 swb

[69c10fan]

Hey guys,

I've got an ole' 69 k10 sitting in my driveway. I'm looking to do some exhaust work soon, whether I do it or have it done. Anyway, I have a rebuilt 350. It's currently running dual exhaust with two separate mufflers. I'm looking to switch to a Flowmaster Super 40 and was wondering if it would be best to keep the two mufflers or do the 1-2 style they now make. I'm leaning towards keeping two mufflers, but I would appreciate some input. Also, I would appreciate recommendations for other mufflers that make it purr without drowning out conversations in the cab.

Thanks in advance.