Blown Mahindra 254 II Engine

I have a 2010 Mahindra 254 II, and I was bush hogging on some very steep hills at a friend's place last weekend. The temperature went up, and the oil pressure dropped, so I stopped. It has always been that way, right from new, and, as I self-imported, no warranty (factory support was a joke). Let it cool, and it would be fine again.

When I started it again, it had zero oil pressure, whereas it still had oil pressure when I shut it off. Because it has had all sorts of electrical problems, any gauge dropping out at any time is not to be unexpected, but, granted, this was coincidental. As it was in a very bad place, I didn't have any choice but to gamble and drive it out, but all seemed fine, so I loaded it on my trailer to go home.

Starting it again to unload into my garage, it started very hard (not its nature), and no power at all, so the gauge wasn't coincidental.

I guess I need an engine rebuild kit and an oil pump. Where can I get this, because paying money to that factory and then begging and pleading for responses, much less product, for months on end, isn't high on my list of pleasurable pursuits. Snow is coming a whole lot sooner than any parts from China and I need this blasted thing fixed to run my snowblower. I'm in a pickle.

Thanks for any help!