I'd like your thoughts on this 360

I recently had a used suregrip installed. As for the 2.45, I am not sure there is even a factory suregrip that is available for that case.

The 8.25 or 8 1/4 rear axles that interchange are 2.25 & 2.45 but the sure grip unit for those axles is not supposed to inter change with the 2.73 and higher gears.