Those kits look good except for the claimer pistons. I would look into those some more. "Claimer engines" are generally not meant to last very long, and I don't know what that means as far as how well those pistons will hold up.
I would spend the extra money and get this kit:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2463511311
This is the place I got my rotating assembly from.