They are really loud and when you lay into the pedal all the nice tone goes away it is just loud noise. They are a lot smaller so if you do get them you will need a small section of pipe to conect them to the existing stuff. I persoanly would keep the set-up you have, but that's just my opinion. I like mine nice and loud with the MAC dumps atleast when I go to WOT it still has a nice tone instead of just wide open noise.
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Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!
FIRST TIME OUT 12.16@111 WHEELS-UP