Switching out the barts

[SDJ]

Hey out there, does anybody know any good single coil replacements for bartolini MK-1s (The five string ones)? I love my SR905, but i'm really not much for humbuckers. I'm looking for ones that need little to no modification to the body. Any suggestions are great!

[Ach]

Nordstrand Big Singles, But i would aware about string spacing, Ibby usually 16.5mm at bridge, while Nordies designed for about 18mm i guess. Actually MK1 pickups are ok, MK1 Preamp - not.