Which Exhaust to Buy??
 

I know there are several threads on this subject but I am still confused. I almost ordered EMI's. Then I checked with another place and they said EMIs don't flow as well as Gills (which they sell). Builder will be done with the motors soon, so I need to make a decision.
The application is 502 MPIs that are being converted to roller rockers, and roller cams. Marine Kinetics is providing custom cams. The boat is a 42 open sportfish with Arnesons. The emphasis of the build is efficiency (range) and reliability. These engines are under heavy load and low rpms typically 3200 to 3600. Light boat is about 15,000 lbs heavy boat is about 21,000 lbs.
Any suggestions or ideas would be greatly appreciated!

Thanks,

Steve

anyone?