I have worked with Jeff Johnsons fabricated, Moroso, and BLP products. The Moroso's are decent, but they are big. Just basically a big square, they are alot harder to fit in the car. The Jeff Johnson ones i had issues with. The ones on ebay look identical to the jeff johnson covers. BLP makes hands down the best fabricated hemi valve cover currently on the market. It is built on billet rail with the gasket groove CNC'd into the rail. Everything fits the way it is supposed too, and they look awesome.