What I would do is call up Mike at Hilbish Ford and he'll send you everything you need for the repair. According to him that part has been revised and the new one will not crack. It's something like $40 if I remember right.
Also, keep an eye on oil leaking from your valve cover gasket. 99% of the time that is what causes your problem.
Yes, that is a banana in my pocket.
Dan - gump
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Wiregrass Region SCCA