The problem I'm having is the retainer sets on top of the tool so your loosing the thickness of the retainer in the height of the tool its 1.6 inches tall plus the thickness of the retainer there is no way to get the keepers in. There is a recess cut into the top of it for those narrow Chevy retainers to set in flush but mine dont I will take some pictures of the retainer and the tool installed on the head so you can see what I mean
