Hey DC, I've never seen the point in converting an amp. Also wouldn't want to mod any of the vintage stuff. If the Galien is an 800RB it's actually a really cool amp. There was a common mod for the DI section that "magically" cleaned up the whole amp. 400's were just generally pretty bad.
The issue is less with the guitar than the combined length of the unbalanced cable run. 20' to pedals, 6' in pedal land, and an A/B/C amp switch that adds 3 runs back to the heads for another 80' if he has all three going.
I think I want to hear a Klotz, where's Murch?
Mogami / Switchcraft always sounded the best to me, but the quad style is amazing at addressing the length problem.