No,no,no. It is big difference over the stock prop. Does everything really well. I run around 3800lbs of ballast for surfing and it gets up and out really easily and smoothly. It's a great prop for wakeboarding also. I run an extra 800 lbs on top of the factory 1200 and wedge, gets on plane good, no problems holding speed. With the stock prop I could run 49ish top speed. Lost about 4mph a WOT at 44-45 now. Best part of it is the Fusion is a little cheaper than the CNC'd 475. Same performance overall though.
Great news about the truck. Thought it sounded like you were chasing a driveabilty issue. I wouldn't think there would be any break in on those components replaced. Run it like your gonna use it.