new Dart iron SHP steel billet cap block spayed caps. center caps are four bolt ends caps are two bolt . this is a new block can take a 4.185 bore. block is bored at 4.160 hone to 4.165 block needs to go and priced this way .block can be machined or short or long blocked from mild to very nasty is one of the best blocks to start a big CID 8.200 program. PM me or call 989-667-4071