Sorry for resurrecting an old thread, my MM5 has two Nordstrand pickups it was originally a single pickup, and a John East Pre, it is a lot nicer (imo) than it was originally.
I quite recently bought a TM5, and I love the bass, I really like the pickups, but the pre-amp isn't doing it for me, so I'm going for a John East, just deciding what will work best before buying one.
I'd like the new Uni-pre, I just want to make sure it will physically fit, if not I'm sure a J-retro will do the job.