I don't know about the 5F1, but the rest generally adhere to the original circuit, yet deviate in critical ways. Plate voltages tend to be higher and filter capacitors have larger values. A lot of this is by observation, as Fender has been pretty good at suppressing any distribution of the RI schematics for the tweeds. All I've found is the 5F7 RI schematic. These changes can cause noticable changes in tone and response compared to the original amps. Examples: 5F7 Bandmaster Voltage available to the 6L6-GC grids is 410 V Filter caps are 16 MFD Feedback resistor around the 2nd gain stage is 10M Ohm 5F7 '57 Custom Bandmaster RI Voltage available to the 6L6-GC grids is 462 V Filter caps are 22 MFD. Feedback resistor around the 2nd gain stage is 4.7M Ohm The two amps cannot sound the same with either clean or overdrive tones. Worth it to me? Only if I wanted to dig into them and replace transformers and small parts. I'd rather get a ready-built clone, like @CB91710 says.