The pistons are on order from Wiseco.

For some reason they discontinued the old forging, but after overpowering them with emails and sob stories they have agreed to get things back under way.

Cost is up a tad, but we should get a lighter slug with a moly coated skirt.

They gave me a 5~6 week lead in time, two weeks ago.

(what's happening with them sausages Charlie?.....Two minutes Turkish)

All 300 engines I build (since my first one, but not Luke's) have had the cases modified to accept full skirt pistons.

Yes, I drill bridge oiling holes, as the Wiseco's don't have them. Wiseco even say to do this with many of their pistons if the intended cylinder has a bridged exhaust port.

And yes, drilling your NSR 250 piston on the bridge side does work. And should be done if you cut down the bridge so as to provide a little extra lube. The thinner bridge is more prone to expansion into the bore.