[Ruffy]

I'm with Gary - home rebuild is probably all you need. Decent pattern parts are plentiful and not stupidly expensive on ebay etc. (I've used Powerhouse in the past for seals and stainless pistons.)

Caliper bodies are alloy and seals usually keep corrosion to outside of the bores, so personally I'd be pretty confident that they'd be OK, needing just a deep clean once the pistons are out.

Alternatively, SV calipers are reasonably plentiful on secondhand market too (pointy are same as curvy) - though probably any secondhand purchase would warrant a service/strip & rebuild for confidence's sake.

AFAIK, calipers from different bikes generally require adapter plates or other mods, and would likely be a more expensive solution, so I'd be starting with OEM first if time is in short supply.