Falcon Coupe, I see you experienced the same height issue I experienced. I have my 408 Cleveland runing now on a test stand. The custom valley cover shown in my Photobucket link in the previous thread shows the fix. 3/8" Mic-6 alum plate. Band saw the ends, tap the six seal locators at the ends 1/4-20", and o'ring the plate edges on a Bridgport mill. I used Right Stuff sealer at the ends only, no gaskets. The Edelbrock Torker was easily "Air Gapped" with a band saw and air tools. I also removed the exhaust cross over since the heads didn't have any. The end result was interesting and has reveled no leaks.
This fit is ok if you have a machinist friend to make the cover plate. Otherwise
your stuck without it. Check out the billet Timing cover we made for the Cleveland as I couln't locate any new ones here in the states.
Kartjock
http://s378.photobucket.com/albums/oo228/kartjock/