I recently picked up an older Jackson 5-string PJ bass, and the P is phenomenal but the J is not. I thought I'd easily pop in a replacement J, but so far I haven't found any that are the same size. This one is: length 3.69" ; 3 11/16" ; 94 mm width .72" ; 23/32" ; 18.5 mm screw spacing ctr-ctr 1.56" ; 1 9/16" ; 40 mm Do you happen to know any like that, or do you know of any pickup makers who could custom build one in that size? I asked Nordstrand, and they don't do direct sales to the general public. Thx!