I got one from a Fiero, it's flat, 3 spoke, and looks a lot like the original only smaller. I put a Camaro horn button on it with the bowtie center. I have PS so it works out well.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine