here's a list of possible mods for guitars:
killswitch, phase switch, series/parellel, coil split, coil tap, better tuners, better pickups, better hardware, tremolo bar/whammy, mid boost circuit...
Quote by drunkinkoala
you can be jesus.

Quote by Wesseem
most useless response i think i have ever seen on any forum ever.

Quote by Turkeyburger

3-band EQ - Find a schematic for a 3-band EQ (or more bands for that matter), and position it between the output jack and volume pot lug 2/3-way switch (in other words for Strat or Les Paul)
Pedals built-in - Same procedure as above
Fret scalloping, refretting, super-7 switching, 3 mini-toggles on a Strat, refinishing, ebonizing fretboard, nut replacement, fretboard/pickguard LED's, built-in speaker, dual output jacks, cable mounted in guitar, piezo pickups, etc.
Schecter Hellraiser Deluxe
Boss DS-1
Crate GTD65

GAS List:
Mesa Boogie Dual Rectifier Roadster