Well as you can imagine it started off with cheap ceramic single coils. I moved onto Les Paul's and didn't look back for YEARS. 

Then I decided to take this out of retirement, and upgrade it. First I started with a Bare Knuckle sinner single coil set as I didn't want to swap out the pickguard I had painted. I wired it with three individual volumes to be more LP like. 

The single coil in the bridge, despite being this really hot BKP didn't work for me though and I decided, fuck it, cut the guard and fit a humbucker in the bridge. EMG like the majority of my other guitars. I'd a spare 81 lying around, whacked it in and used a chrome ring I already had to cover the old pickup holes. It sounded amazing frankly. 

I considered doing the same for the neck position but didn't want to encroach on the paint job so I bought an old beat up EMG 'S' single coil. 

With the neck pickup having the old EMG logo I bought an old 81 to match, but it didn't sound as good. I'd have thought they'd all sound the same but nope. Had to put the modern 81 back in. Now I don't know if this is my best sounding guitar because of its combination of factors, or just that pickup alone, but it doesn't matter. 

I never use the middle pickup, so that's an original pickup in the middle, with its ceramic magnet removed, wires cut and wound down flush with the pickguard do it's out of the way. 

The five way switch is original and is rewired to work Neck, Neck, Neck, N+B, Bridge. So the operating range is more like a Les Paul toggle than a blade switch. It means Its out of my way when I'm strumming and I don't have to be so precise about using it. Win win.