been looking at alot of different mufflers lately, and i really dont want to go the flowmaster route, even though they are loud...they flow like crap...
Who says they flow like crap? I have Flowmasters on both my Barracuda and my 96 Z28. They both run well. My z28 had an edelbrock glass-pack style exhaust system prior to the flowmaster. It ran like crap and had a horrible drone on the freeway. Installing the flowmaster exhaust quieted it down AND made way more power - .22 seconds and 2mph in the 1/4 with no other changes.
If you're talking about flowbench results, then flowmasters won't flow as much on a flowbench as a non-chambered muffler. They require the exhaust pulses to work properly. Last time I checked, there is no feature on flow benches to mimic exhaust pulses.
Try the 30 series flowmaster. They have less drone and make plenty of power.