Rebuilding a 951/947

[mikidymac]

Rebuild it yourself, cylinders machined by Group K and crank and balancer by competitive crankshafts back on the water in a few weeks.

 

[1of500]

I've seen new oem piston on ebay for$85 each

 

[Mattrm]

I have a 98 gtx limited with a knock in it. I know a complete rebuild is in order but it sounds like parts aren't available. I wanted to rebuild it myself but I'm thinking I might be better off buying a complete rebuild / exchange engine.
Can someone recommend a supplier for either the parts or a complete engine? I'm not having a lot of luck with either and trying to figure out the best route to go.