dude. swapping the pups is a nightmare!
it had a 490R and 498T setup in it. i had the grind the feet of the base plates down to fit the holes in the body in the bottom of the pickup cavity! so stupid!
i just rewired our other guitarists GS, which is newer than mine, but we had the same problem, we were going to try a miracle man in it, but i didnt want to grind mine down (i dont have a grinder anyway) so i took the gibson pickups put of my GS and put them in his, so he can at least here his guitar with a modern-ish set of hot-ish Alnico V pickups.
it is a cool looking guitar, and its SOLID. it controls feedback naturally well, well it did with the 498T in it. its just the width of the neck. it can do metal man, with the right pups, easily!
maybe one day someone will take an interest. someone i wouldnt mind selling it to who i know will really appreciate it.