I'm not sure of the exact specs, but your rods seem a little long for that much stroke..

You must have a 1.33 CD I'm guessing and thats if your deck is exactly 9.600...

I'm not trying to be a smarta$$, just making sure you have the right stuff before you get too in depth in your project...

Also I am just speaking from using diamond pistons. Theirs were 1.45 cd off the shelf IIRC. I used them in a previous build.