Brand New Dart 10.200 with 4.600 bores and ductile main caps. This block is a Dart second, the issue is the block has light chatter marks in the lifter bores. Chatter marks happens at the factory when the cutting tool used to bore the lifter bores wasnt as sharp as it could have been. Not a big deal for roller lifters and they can be cleaned up with a brake hone. We will clean up before we ship. We also have many other Dart Blocks in stock, from Big M's, Little M's and Ford Iron Eagle blocks. Also have tons of good used Big Block cranks in various sizes as well as tons of heads and other various racing parts.