Reporting question for Amp Kit - MOD® Kits, MOD102 guitar amplifier

Amp Kit - MOD® Kits, MOD102 guitar amplifier

What are the dimensions of the chassis without the handles? I am looking for an amp I can install inside an antique tabletop radio cabinet and need to know if this will fit. Also, how thick is the chassis sheet metal? I'd like to install the power switch and indicator lamp on the back of the chassis - I don't care that the front will still have holes pre-cut, but I'd like to know if I'll be able to drill new mounting holes with an ordinary step bit. Thanks!

The chassis measures 10" x 6" x 2" but the gauge of the steel in the chassis is not specified by the manufacturer.