It's the stock 51 bridge, as far as I can tell.
I measured 66mm, which is the same as the other 2 guitars I have on hand.
I measured the pickup too, and compared it to the neck pickup in my Jagmaster. Both 78mm.
I'm a bit stumped about it now. I really have no theories. It seems that even adjusting the position of the pickup would not make a huge difference, because the poles still would not line up. Low E would be about the extreme top of the poles, and the High e would be at the extreme bottom of its poles.
But it would still be preferable to the way it is at the moment.