I am wondering about the differences between Donovan 392 valve covers. I have an original fuel Hemi I got from Kris Karamesines 25 years ago. It has Donovan finned valve covers. Yesterday I went and looked at another 392 hemi. It had What looked like Donovan valve covers on it. But they are slightly different than mine. These had only 4 ribs on top while mine have 5 ribs on top. Here's mine When I asked the guy about his "Donovan" valve covers, he told me his are original and paid big bucks to get them. Does anyone know if Donovan offered two different style covers back in the early 60's or are his fake copies?