Nice, i already bought stock replacement, and they just need to be filed, the ring gap never came with themWhat does your manufacturer recommend ?...Should be on the box....I can't remember but I went with but thats what I did...contact Chip at https://bigrmotorsports.com/ or shannon at https://www.stinger-performance.com/store/index.php?route=common/home.... he has this for the replacement rings he sells tho they are diff from stock or stock replacement https://www.stinger-performance.com/Pics/cp_instructionsheet.pdf