My boat is all glass, on the trailer it goes 5400 pounds. Not sure on the set up, that is a little over my head. I'll leave that up to the to you guys. I think its in the V Drive gearing. I had a GPS on this summer @ 4500 RPM it went 44 MPH. I have yet to talk to a Campbell owner with under drive gearing. I will finish motor this month and find someone in my area to check out V-drive for me, any suggestions? Etiwanda, CA 50 miles East of LA.
Probably Prime Marine is the closest vdrive specialist to you. Rancho C.