I have a Peavey Custom EXP with a H-S-H configuration and I would like some ideas on how I can get my Bridge pickup, which sounds pretty trebly anyway, to sound more like a Tele bridge pickup? I use a BOSS GT-8 multi-effects box if the EQ on that would help any. Any ideas? Thanks.

umm..with the bridge being a humbucker its really hard to get it to sound like a single coil..you could try one of the presets on the GT-8 but im pretty sure i havnt ever found one that you could use as such.

put in a single coil/dual coil tap ....you usually can just use the volume or tone control knob (make it a push pull pot(you will have to buy a new one made that way)) and then split the coils from the pickup..or you can use a three position toggle switch and use one side of the humbucker (single coil) then both sides center (humbucker), then other side the coil for a different  single coil sound.. of course you don't have to use this configuration ..just giving it as a idea.

http://www.guitarelectronics.com/category/wiringresources.1wiringdiagrams.humbuckerwiringmods/

edit: just looked at the date on the original post..oops probably already figured something out by now

put the pickup selector on the fourth setting (joint mid single coil and bridge humbucker) and use the Clean Stack preset on the GT-8. Then select JC-120 Return as the output type on the GT-8 and ensure that you have the treble turned up on your amp and the mids turned down.

that is the most choppy tele tone I can think of with your gear. nothing like the real thing tho! if you want tele chops you need a tele or at least a single coil for the bridge position.

I've alwasy found that if you use the bridge pickup of a strat and pick or strum really close to the bridge it will get a similar tele sound