Summit Racing at http://www.summitracing.com/ has a number of nice covers.
Old bent ones that have been over tightened will never seal!
That certainly seems to be the case with my valve covers. I appreciate the lead to Summit but I checked the prices and they are up there over $100. I will have to settle for valve covers in the $50 range with heavy duty gaskets.
A side note is that all the parts websites that I have visited have such small type that I can't read the specs. Looks like I'll have to put some reading glasses in my budget :(
Bob
