Referencing  Hurricane John's mention of Valley cover bolt washers that are thicker than originals & can cause bottoming out of an intake manifold.. I believe the set I have here are like that.  They weren't in original packaging and are marked NPC & 55. The washers are molded to the rubber & the upper rubber area, before the taper, is 1/4" thick. They appear too thick for under a "B" manifold.  Looking at them I can't see a viable way to shorten them..Any suggetions?  (and thanks John)


Paul