I am looking at a 2003 Larson 234 Escape with a 5.7LGi Volvo Penta. The outdrive is a duo prop set up with a F6 stainless prop. I have researched a aluminum series for this drive and it looks like the X series (composite) will fit. Can anyone tell me is the X6 prop the same as the F6? Any insight on this would be much appreciated.