The HEMI piston is heavier than a wedge typically and the Callies rod can handle the weight - its an upgrade worth the money IMO

I played with HEMI's 30 years ago - when I wanted to step back in racing with a big HEMI I talked with BEST - no disappointments with the 572 build they did for me - we had a lot of discussions on parts choices and what would work best for what I was going to do - They have the experience!