So I just got done building a headshell for my Mesa (bought it as a 1x12 combo). Didn't cut the combo chassis, just built the head from scratch.

For a speaker cabinet, in this case a 2x12, would the dimensions listed be interior dimensions, or exterior? Something tells me interior...

Gibson Les Paul Studio
Highway One Telecaster
Dean Evo
Mesa F-50
Laney GH50L
Vox AC30 C2
Ampeg V2