Just sharing some boss pedals that I have modded for clients in the past.
1. Boss SD1 Keeley 5 Star Ge Mod
2. Boss BD2 Keeley Phat Mod
3. Boss DD7 Internal Tap Tempo Mod
4. Boss DS1 All Seeing Eye/Ultra Mod
I still do these mods every once in a while. You may pm me if interested.