Reply to Midi fighter spectra replaceable top?

I have ordered a spectra and was wondering if anyone knows if the top is user replaceable.
I was stuck between the wooden finish and the clear and as a carpenter I decided to go with the clear as I can get hold of some nice timber and put it through a cnc / router to make a replica.

Does anyone know if the top just screws off and roughly what thickness is it?

Thanks,
Mr Stiffy.