1 Piece aluminum Driveshaft and larger fuel tank

I have read about driveshafts rubbing on the fuel tanks.
I'm considering upgrading to the 1 piece aluminum driveshaft from driveshaft specialists. (5 inch) would that hit/rub my fuel tank if I upgrade to a Titan xl 52 gallon or BD 52 gallon? Or would it be better because the center u-joint is gone. Or would it be better because the u-joint is gone, and worse because the shaft is a larger diameter? Not sure who out there had done both of these mods to their Megacab?

Thanks