Your distributer is the same as mine. It the old style MSD. Should have two brass screens on the bottom if it's a marine. Are you using the bolts with the nuts or the bolts with the hook on the bottom to hold the cap down? If you are using the cap with the hooks cut them off and use the bolts with nuts. And if you have the cap with the window you have to trim the bottom off on the black plastic door or get the marine cap with out the door.