Are you implying you think you could reverse engineer the mods that were done to Eddie's amps? I like to think I'm good at what I do, and you could hand me a pedal (which is peanuts to an amp) that I've modded, and I'd be hard pressed to reverse engineer, barring that I wouldn't be allowed to just look at component values.
I doubt Eddie mentioned tech specs in any of his interviews, and I doubt José Arredondo was interviewed regarding the subject. And it's not like you can reverse engineer an amp with black box methods, especially if the box in question isn't even in front of you.
How would you suggest he further his research?