i have seen pictures of the under cut bolts so i was unsure about the studs they are all the same so i wanted to make sure, i think erson said to use washers no larger then .750 the ones they supply in the box look thin . i think the arp washers are not completly round so they hit one way and the other way they are fine. i have precision
oil pumps screw in .090 restrictors instslled in the edelbrock heads.