John,

I thought something was up, its been awful quiet around here!

You may be right on the pistons being the different #. I can't verify the pistons because there is no # stamped on them. Right now the motor is sitting on a crate so I cant get a piston out. I need to do this and match it to my friends stock pistons.

My block is .040 over. I see the PAW catalog only shows a .030 for the 2316, but I'm sure I can get a .040 for it.

What about the KB-162? I know its not in the NHRA rule book, but am curious as to why they aren't considered OEM if weight and compression is OK.