I know they make an adapter for a 2 piece crank in a 1 piece block, but do they make an adapter for a 1 piece crank into a 2 piece block? Reason I ask is I have a Cola crank for a 1 piece block, but I'm going to be running a 2 piece block.

 

I believe that summit has the adaptor you want, but I'm not 100% sure. If you posted in the lt1 section more people who are 100% sure might be able to tell you where to get one. Last resort, call Cola directly and see if they offer your adaptor. Good luck with the crank.