Building a modern ZL-1

[69SSRSL89]

I'm looking into building a modern ZL-1 engine for a future project. I have the new ZL-1 block at home in the crate and I'm looking into using GM performance parts aluminum heads does anyone have any advice on which heads to go with. I'd like to use a solid roller lifter and build something with some decent hp. Any advice would be greatly appreciated. I was also going to ask if there is a big difference between the 7115 crank and the 6223 crank. I have a lead on a 7115, but wanted to know if there was any real big plus to get a 7115 over a 6223 when building this engine. They both seem to have the same stroke. So, I didn't know it there was much else to make it work while to hold out for the 7115. I apprecaite any help I can get with this. Thanks in advance. This site is the greatest Jesse