AT-1 Bridge with 2 injector necks is my favorite. 500k pots, wire the at-1 so it goes into parallel mode when in position 2 with the middle pup, or wire it so the AT-1 and the middle injector split and flip the magnet on the AT-1.
Also notable: Breed Neck (or Norton) + some combo of Area 54/58/67 with 250k or 300k pots.