Thanks for the "thumbs up" on Superwinch products, it confirms the many positive reviews I've read on their winches.
My original thoughts on the plow width was also for the 60" wide for the same reason you articulated. KFI shows the 60" as an ATV width and the 66" as a UTV width. That got me thinking that the 60" may not be wide enough to cover the path width of the P500 when the plow is angled to it's maximum but, for sure, I don't know. Since I put new tires and wheels on my P500 the overall width has increased to 51 7/8" front and 52 5/8" rear. Maybe someone knows (or KFI could provide?) the path width with maximum angle. The 60" would be better for me too, but I'd like a "clean path" so as to tire pack down the snow as little as possible.
BTW, the 66" KFI does have two more stiffening ribs on the back than the 60", FWIW.
Thanks again for the input.