[Kitto]

I have an original pair of stainless steel transom vents for sale. I purchased these thinking I could swap out my black vents, but the fit just doesn't work. So for $50 plus shipping you can have yourself a nice pair of vents. They're a little dusty from sitting in my garage for a year, but nothing a little Mother's polish won't fix.

[brianvander]

Hi Kitto,
I've wanted to replace my Black Vent Covers on my 94 Z212. Attwood Marine makes these covers in White, Black, Off-White & Chrome and the Chrome is sold at "Back to Boating" for around $32ea.
Back to Boating Boat Parts - Featuring Attwood Gas Springs, Bilge Pumps, Navigation Lights, Boat Seats, Ventilation and Seat Hardware - Back to Boating Boat Parts - Featuring Attwood Gas Springs, Bilge Pumps, Navigation Lights

This particular Vent Cover is 17-9/16" x 2-3/4", not sure if this is the same size as your Diablo, but check out Attwood Marine Site, they have multiple different sizes...
Marine Ventilation, Boat Cover Vent, Solar Boat Vent, Boat Air Vent : Attwood

I haven't pulled the trigger yet myself but I intend to shortly...

I'm

[Kitto]

Brian,
I'm not sure of the dimensions and I'm on vacation until next week and then I'd be happy to get those measurements. I'm selling for 50$ as that's what I paid for em. I got them from another member on the site. He was parting out his boat.