Vintage Original Mopar Performance, Direct Connection, Quality Chrome Valve Cover Set for B and RB Big Block ~ 383 ~ 400  ~ 440. Heavy Duty, Made in the U.S.A. from the factory tooling that the original production valve covers were manufactured from. They fit like the originals and set off your engine compartment. Have the factory location of the PCV and Breather plus baffles. These are getting harder to find every day. This is one of the nicest pair I have seen. These will definitely take your vehicle to the next level. I will that the time needed to package these good for you, so they will arrive to you in the same condition as shown.