New 20' 73 owner looking for Vents??

[Blue]

Looking for some help here.

I recently made the purchase of the 1973 20 footer on e-bay. A blind purchase but has turned out to be one of the better things I've done in a while.

I am looking to get it back looking sharp and am in need of some of the Black stern vents. The ones that came on the boat are all cracked up. I looked back through the forum and came up with a few suggestions for Seafit vents but could not find any that were wide enough. Any Thoughts??