Thanks. I believe the R60s use a reverse P configuration and I see that on the Kent Armstrong site, so I'll go with that. I would imagine most people who want replacement MB pickups want to get a broken bass working again, so not sure why he would wind them differently than the stock ones would be.The Kent Armstrong pickup made in the USA certainly is great. I ordered a couple different ones from the the UK based Kent Armstrong (run by Kent's Don apparently) and while good they were both noticeably lower in output than stock. Oddly in his item description he says they are overwound as the original pickups lacked enough heft. Ummm no not all. I've owned nearly a dozen vintage Aria SBs and couldn't be more untrue.
With the new reissue SB basses I wonder if Aria will offer the pickup as a buyable part?