Deano, Can NOT Help you, I had to replace the cheap COBRA valve covers I bought for the same reason. Took those old stock valve covers, and put them back on. The stock mustang valve covers are bullet proof.
I found that for a carb application, you can put a PCV valve in the Drivers side valve cover. I cut the big oil fill tube off Just below the little breather pipe. What is left is a perfect fit to slide a breather cap over.
I can post photos if you are interested.
The woods should be laying full of these old covers tho. I will be dissapointed if you dont have a free set within 24 hours.
BTW, My oil leak IMMEDIATELY went away. And i had fought it for weeks.
[ July 27, 2002, 10:55 PM: Message edited by: CobraEarl ]