I bought the Thunder 1 Stew sold. Used in in anger (rehearsal) for the first time this week, it sounds more precision than a precision does - as in that cliche rumble when you hit the e-string, like a touch of distortion even when you are playing quietly.
Gratuitous picture, just to make Stew wish he hadn't sold it...
It does appear to have the control cavity stuffed with neutron star matter, so no neck dive issues then...
I'd forgotten but my brother* had a 1A he converted (tastefullyish) into a lefty so it looked like an SG.
Also i hadn't realised his current bass is a Westone Spectrum DX, the top of the range and a proper lefty.
*the ukelele/bassy one, not the guitary one.