318 with "special" j heads?

Rumble, I posted above it was achieved with aftermarket pistons on the 360 and no block machining was done. I got the numbers from the 318 and it looks like it will be sitting at 10.33:1 static compression using the thin .028 mopar gaskets. I'm not sure how the engine will react to the larger 360 and rpm runners but I'm thinking with the added compression and a good cam it should be a decent engine to run for a year or two.