Eric,
As for the possibility of a GFS pickup... I have a set of both the 59s and the FatPats, and If you are looking for something a little warmer, go with the FatPats. I think the FatPats are just what you are looking for. As for the volume pot, I believe a 250k will darken up the sound as well (I could have that backwards, I'm sure someone will correct me if I do).
Scott
"...and I am outta here!"
Scott
Guitars:
Dean EVO Exotic Burl, EVO Special, Vendetta 1000 FR, Stagg Les Paul copy, Squier Standard Telecaster, Squier MIK Stratocaster
Amps:
Fender Princeton 65 (solid state), Vox AD15VT, Peavey Windsor Studio, Crate Vintage Club 50 2x12
Pedals:
DOD FX40B (x2), FX50, FX52, FX55, FX65, FX67, FX80
Washburn LSESLD, LSBOD
BBE Free Fuzz
Behringer EM300, VP1, PH9
Dunlop GCB-95
ProCo Rat II "The Rat"
DigiTech Bad Monkey, RP90
Rockman Soloist
and many, many, many more!