I have a bunch of LPs, some chambered, but none with the all-mahogany construction.
I'm guessing that you have either the 490R/490T or the 490R/490T set in your guitar. And I'm thinking that you don't play at crushing volume. So, there are many ways to go here. I think there are a lot of sets that you would be much happier with than the stock pickups.
The Pearlys would be a great choice as an all-round classic rock pickup, but there will be other advocates for Seths, Ants, WLHs, '59s and A2Ps. If you're not using over-the-top gain at loud volumes, the Seths and Ants are probably the sweetest pickups around. The others I've mentioned are potted, and more feedback resistant.
I think you could even stay in the Gibson realm with a set of Classic '57s (very warm) or add a Classic '57 Plus to the bridge for warm, round and fat rock tones. If you want more twang; more brightness, definition and edge, try a Burstbucker 1&2 set. While I like all of these sets in my guitars, my thought would be that you'd be better off with a Duncan set--and the Duncans will certainly be a less expensive route. Possibly you could go try some other new Gibsons and see if there are any sets you really like.
You'll also get a lot of recommendations to use split-sets like a Jazz neck and Custom whatever in the bridge, or the '59N/JB combination, and these can be very good at tailoring the sound from the bridge and neck to get you exactly what you want from each position. It sounds great, but I know that I prefer sets of the same pickups. I have the 490R/498T set in one of my guitars and it drives me crazy because they sound so different: every time I switch pickups I want to run back to my amp and reset the tone controls. But the '59/TB-4 I have in my G&L ASAT Deluxe works great.
One other thing that you are going to want to do is replace your pots and caps to get the best from your new pickups. Using an RS Kit from RS Guitarworks will get you a set of high-quality caps and pots of the correct values to use with humbucking pickups. The tapers of the pots are much better, and allow you more control. These pot kits are available from other vendors as well.
I do a wide variety of material, from '50s oldies, blues, country, jazz, and classic rock. I selected a set of Seth Lovers for two of my LPs, and Antiquitys for another, and I could not be happier with my selections. But I also have LPs with the stock pickups, and been very happy with those, too.
In the end though, you "...pays yer money and takes yer chances!"
Best wishes!
Bill
