Looking for some specs on Fender's 5-string necks (beyond what I can find Fender listing). It used to be that the 5-string P's and J's had the same necks - is this still the case? I recall the American Standards having the same neck. I'm wonder if that's still the case for the American Professional II series. The P is listed as a "63 C" while the J lists a "slim C." Does anyone have caliper measurements at the 1st fret?