Hi. I'd suggest you look for a TonePros T3BT bridge. It's a Nashville style bridge, which I prefer over the ABR type due to the wider saddle adjustment range.
Though I've yet to actually fit one to any of my kits, I've bought several for use on them, and as far as I can measure, they are 2 7/8" centre spacing and the holes line up with an ABR-style bridge from a PBG kit. Also, the post hole size is the same, though I'd suggest using the TonePros. It also appears to have the same centres as a real Gibson ABR-1 bridge that I took off a 335 (though that has the smaller post hole diameter).
The TonePro posts are slightly lose in the post holes, which allows for slight inaccuracies in the drilling of the body holes in position and angle, but the locking grub screws then hold everything firm. In fact the holes are just very slightly wider than on the kit bridge.
Here's my T3BT alongside a gold PBG bridge.
Last edited by Simon Barden; 03-06-2018 at 03:56 AM.