I have one Howards main cap. It has angled outer bolts. And has the step like our blocks have. It is a heavy duty billet dude. Made in the U.S.
I was in a hurry when I did my rebuild and bought a set of 3 because they were in stock. At Summit you could buy one more center cap for $90. I could make you a deal on this one. If you decide to go that way let me know.