Justa,
I don't know anything about the GFS lipstick pups, but there is a whole forum dedicated to '51 mods. Here is the link http://www.instituteofnoise.com/squi...um/default.asp
If you go to the Shop Talk or Sound Clips sections and do a search for GFS lipstick pups, you may find some more info on them : .
GG
Guitars: Washburn D10S, Washburn J28SDL, Washburn D56SW, Washburn F52SW, Washburn WI67PRO, Squire Standard Strat, Squire Tele Custom II, Squire '51, Agile AL-3100, Switch Wild IV Signature, Squire Classic Vibe 50's Tele
Amps: Vox AD30VT, Epiphone VJ Combo, Crate Palomino V8, Vox DA5
Pedals: Digitech Bad Monkey, Boss Blues Driver, Danelectro: PB&J Delay, Tuna Melt Tremolo, Chicken Salad Vibrato