Originally Posted By bee1971
For every one that says it works with the factory oem oil pans with embossed rails like my 402 oil pan , another says it will leak

General consensus was they only worked on rigid flat aftermarket oil pan rails


Actually, in this tread there are 3 responses that were positive for the composite tray with gasket and 2 that were negative.

And I use the Superformance gaskets everywhere on my engines, except the pan, head, and on Hemi valve covers.

twocents

Master, again and still