Nice machine, Redprimo.
The 330AB/P is a beast, and cosmetically, at least, yours looks sweet. (Not that there's much you can do to harm those big xformer machines...)
I run a Sync 250 but if I had $850 lying around all lonely and unloved, I'd grab a machine like that in a heartbeat.
Best of luck with it.
(I suspect you already know this, but you'll need a lot more than 50A if you want to run that monster wide-open!)