Sounds good. Keep us posted. I will be tied up until next year but am interested in a 9.5/1 piston. Usually you will have to buy like a bunch of pistons to get a break, pick a number, like 100, from someone like JE http://www.jepistons.com/ They make the best forgings and offer w/ coating, gas porting, etc. See their order form. They may have something on the shelf. Years ago they would make anything.
It is a place to start and I bet there are other capable suppliers. Count me in and I'm sure several others would be glad to help fill the order.
Something w/ stock ring layout and better/lighter material piston & wrist pin and a trick coated skirt should do it. There is a guy on Heise (I think) that had the jug coated too and says he broke into the triple digets. I wish i had time to pursue this now. I was going to send JE a stock Savage piston ( for instance; I assume all years are the same) and order a batch w/ 9.5 /1 domes.
How many here would be interested in ordering a batch of new 9.5/1 pistons? How much is too much?
FYI; RonAyers.com quotes a stock Savage piston set is $76.31.
A stock Savage is square bore x stroke is 94mm = 3.7007"x 3.7007", here's  more possiblities; http://www.donsautopages.co.nz/enginespecs.htm
A 3.8 L & 305 c.i. chevy  is 94.89mm  and the Toyota truck 4 valve is 94.01mm bore so I bet a making slugs for a Savage is not too hard? It wish I had a 650 piston to compare to a Chevy with.
http://www.ronayers.com/fiche/300_0271/crankshaft/crankshaft.cfm
Part Number: 12100-24B00-050
Description: PISTON SET,OS0.
Price: $76.31

Group buy on 9.5:1 pistons sounds good to me.

klx650:  Paranoia-  I can tear down and rebuild the engine myself but I don't have the tools/expertise to bore out the cylinder.  I have seen a few engines which had their bores taken out a few millimeters and while the bores seemed perfect as soon as the crank, girdle, and pistons were put in the bores "deformed" and became semi-oval at some point.

Therefore I keep my costs down and simultaneous work performed limited.