Yes they can bump up the compression by adding to the dome that is already there on the stock size, possibly making it a flat top. Takes a lot of math to figure out what the final compression would be so I would have to ask. It would make a sweet nitrous set up though if you had the octane to use it.
I talked to Diamond again since last post and got the price down a bit. $606 for a set of 6 with wrist pins. No word on rings as of yet.
