Just as an idea, as it might be difficult to find an exact match for your specs - have you thought about modifing the stock wiring?
I`ve had good results in using a freeway switch on a HH guitar to have a nice single coil sound. That switch replaces the 3 way toggle and with one additional push/pull you can switch
1. Humb - Humb
2 SingleC - >Single C - outer coils - most stock wirings use this switching
2 SingleC - >Single C (innercoils) - additional layer, single coil sound softens and in particular both pickups in parallel sound quite close to the strat position 2
Of course the results depend on the pickups ...