It's funny you mention this, I've accidentally built a few Cracks this way.
You'll need to drill an extra hole for the anti-rotation tab on the potentiometer, as you want the potentiometer tabs facing rearward.
I would also NOT mirror the insertion of the IEC socket, but rather just use some insulated wire for the safety ground buss between the E lug and the chassis solder lug.
As for the rest of the circuit, you can leave everything as-is, just adjust your wire lengths.
(I don't recommend doing this, by the way, providing tech support via the forum will be much more difficult and the likelihood of needing repair will greatly increase)