Problem with inlines, they cost more to rebuild the V8. Keep looking for a better engine, one thats just needs a freshening up, not a total rebuild.
That piston doesn't look to bad, my race car ate a screw at 5600 rpm, it took out four pistons and the block, I salvaged the head. Its amazing what a little piece of something can tear up.

Glad you found something, to much really!

Joe