I was thinking the same thing. Probably more like $1000+ for something like that.

I can tell you to get to 8:1 on a 5.9 with iron heads is going to take a custom piston though.

I'm in the middle of doing a 360 with open chamber '308 heads, and I couldn't get the compression to 8:1 with an off the shelf piston.

The closest thing I could get was a Probe SRS series piston. 14.5cc dish, but even with that you'd need a crazy thick head gasket to get to 8:1