I have a 1984 champion Bass Boat 20 foot fish and ski With a 2.4l EFI Bridgeport can anyone help me with what propeller to run on this setup.I currently have a high five propeller 13 1/2 diameter 25 pitch on it and it is doing 67mph wot at 6300 rpm.i would like to put a 3 blade propeller but need to know what diameter and pitch I need to get.thank you for any help.