Manley Monoblock Modifications

Hello all, I have a pair of "Manley Designer's Reference Series 250 Watt Monoblock" amplifiers that are around 20 years old. Is anyone aware of any techs that have experience upgrading/modifying these units?

I would contact Manley labs directly (909-627-4256), they will be more than happy to discuss options for upgrades and mods.