Angus.....glad you brought up Gibbons. Just fitted my LP with some SD Pearly Gates...Any speaker you'd have in mind for The Rev's tone?
BP
I've got a PG in bridge on my Westone guitar. It's a bitey muther fucker. Cuts real good.
If you find it too biting get a smoother or darker speaker. My Westone is not an LP so your PG may be more even(less top end)sounding.