What a coincidence - John's two Electric Bass tuition videos are what made me want a BT6, too. Mine is pictured here.
Here are the specs:
Length: 1127mm.
Width: 366mm.
Body thickness: 36mm.
Headstock width: 100mm.
Nut width: 54mm.
24th fret width: 92mm.
Bridge width: 117mm.
Weight: 11lbs 5oz.
Star sign: Virgo. (Or at least, Ken's quality control test is dated the 6th of October 1993.)
Is this enough detail to 3D print one? 😊