Many of the RKT pistons went in the Pros with his head. The pistons are different with the head, vs. without, as you likely know. Different dimensions, but most were Wosner's, at least in the Pro.
This is abit outside of your qual, but I'll share first hand experience with Wosners. I put them in an 11 Pro with his head and multiple domes, ran for ~1100mi. No issues, it did have more power with the head of course, but higher water temps on average. Sold sled with kit in it. Pistons looked good from the exhaust ports, but didn't inspect closer. Personally, I would go with Indy Dan if I was going to keep the sled for at least two more seasons.