Pistons for Essex V6

I pick up my uncles V6 Capri in a couple of weeks and am equipping myself for the first going over of the basic consumables. However deeper searching into parts in case of the need for an engine rebuild has been a little disturbing. Specifically cast piston sets at $1300 per set seems a bit rich.
Are there different pistons options for the Essex that are used in Australia. I noted that there was a hypereuretic Buick V6 piston, 26cc dish for $400 per set, but a 96.5mm bore. So what do people use?

Hi Keith, thanks that would be great if you could pass on his details. I assume they were new pistons?
I've read about dealing with SA - it seems a risky venture. The new essex engines out of SA initially sounded good, but need lots of attention, so that seemed pointless.

Hi guys, this guy bought the Cortina Perana off Derek down in Vic, But one of the pistons and bores were shot. He is getting a Recon motor shipped for $3000 and reckons around $500 to clear customs but it sounds way to cheap for my liking. Also any issues their is nothing he can do. Pistons for $340 sounds cheap but you get what you pay for (and here we get ripped off daily so no hassling the South Africans unless its cricket or footy). I will PM you his details Neil shortly and hope it goes well for you both. As I know you are looking in NZ as well. Keith

BMW forged wiseco pistons:
3.6L 24V • Turbo KE240M94  $699.99* Bore 94.000mm 86mm stroke piston dish -24cc