72 Demon slanty-to-340 Resto

The seals for the heims are not meant for street use, mine did not last more than 100 miles. They are designed mostly for the dirt racer that changes them out after the race weekend.....at least that is what Seals It told me after I called when the ones I were using were not holding up.....that was 20 years ago, maybe they improved them, but they look the same.

Good luck on your hot rod build.