They start out with a very durable .375" billet rail to provide a superior seal to the cylinder head and have tubes up top which makes getting down in by the blower manifold a easier task and rail mount on the bottom row with burn down breather pads welded on at a ten degree angle to clear going out and around the motor with out getting to crowded.
Now for the sexy part, the covers are beautiful to begin with but they were first polished then have been black anodized so these valve covers will give the top of your race motor some serious bling.
Covers are 3.50" tall from rail surface to top of valve cover and have been clearenced on the rail on the inside for race head valve spring clearance.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.