G'day mate, I replaced with Entwistles and yes the adjustment bumps/lugs were in a slightly different position which did require the use of a chisel on the Bridge PUP Rout and very patient sanding out on the scratch plate to make things fit. At a distance it is hard to notice but upon closer inspection anyone with a bit of knowledge on J Bass setup would spot the difference.

The link above mentions just the Neck PUP and the Bridge one may be slightly different. If anyone has installed a set maybe they could shed a bit more light on this for you.