For the neck pickup, BKP don't make single-coil-sized humbuckers, be they stacks or rail types like your DiMarzio, so you can't get a "single coil version", as such, of a BKP humbucker.
You'd have to go with a regular single-coil, but maybe one of the existing range would suit you. I've never tried them, but Trilogy Suite seems to be a popular choice with metal players using HSS or HS guitars.