I have read many posts on this issue. Are the GGBs or Zoomies the best that is out there? What about CMI? My application are 540's with 700 hp on a 35' Fountain. Thanks.

I have a set of used Gibsons for sale here in the swap section. They will handle your power just fine and you'll save alot of money.
http://www.offshoreonly.com/classifi...p?product=2183



If these won't do, call Fred @ Trickmarine. (www.trickmarine.net)

I can vouch that the IMCO Gatlins are good to 1000+ hp and the sound is incredible...

I run GGB Extremes on CMI full dry pipes. 680 hp 540 cu in n/a engine.

I am running the GGB's with Keith Eickert exhaust. They take the bark out of the exhaust note and have not lost any noticeable power.

If I can provide youwith any information on the new CMI's give me a call at our toll free number. We have them in stock for 4, 4.5 and 5" exhaust.

Fred
Trick Marine
866 921 4553

Love the CMIs. They have realy done there homework.