Where in that link did they mention the Ex HEI coil?
All the side cover bolts are a special flanged bolt with a rubber seal built into the bottom of the flange. The two special center bolts with the short threaded stud on top of the hex, have the same sealing flange.
I think the square coil looks fine, especially if you have the plastic cover. If anyone knows where you can get one, I'd like to know. Mine was in sad shape when I got it and later managed to knock it off the shroud into the spinning fan blade. What is left is more epoxy and paint than plastic.
The square holes on the bracket are for the cover to snap into. Mine is kind of wedged between the wires.
If you do use this coil, remember it has to be well grounded. There are only two wires from the distributor module. The coil-in-cap HEI coil has the third ground wire.
