tl;dr
The following combination of strat mods is simple to install and greatly increases the tonal palette of the instrument IMO. This requires giving up the traditional 3rd position (middle pickup), but that’s a small price to pay.
- Tone knob assignment – Connect the first tone knob to the neck & middle pickups and dedicate the second one to the bridge pickup.
- Super switch – Replace the standard 5-way with a super switch or 2-pole 5-way w/ the following wiring: N, N+M, N+B, M+B, B This preserves all the “good” strat sounds and adds the “tele” middle sound.
- Strangle Switch (aka high-pass filter) – Basically just a .003 capacitor on a push pull potentiometer. This will cut out low-end frequencies and make the guitar sound so funky.
- Treble Bleed circut – Add a 560pf cap & 300k resistor to the volume pot to preserve tone while using the volume knob.