Now that I have my Allen Accomplice build finished I'm needing to do some work to my Vibrolux Reverb. It is a 77 and all caps are original, the filter caps are dated 1975. It had been modded at some point as it had a hole drilled in the back of the chassis but whatever was done was removed and plugged. As far as I can tell it was put back to stock as I haven't seen any deviations from the schematic. Since the amp has already been modded and it isn't a particularly desirable year I was thinking about changing it to Blackface specs but I'm not exactly what schematic to use. Thoughts?