I guess it is a big No No to.....

[Rickmustang]

I hung a concave mirror, used for road racing, over my inside mirror. Great visibility, as I don't have any side mirrors.

[JohnSlack]

is one I have for sell if you're interested? Probably had it for close to 50 years. Absolutely mint condition.

      Roy

The Talbot mirror that TA Coupe posted is the second most popular mirror that ended up on 65 GT350 . Both the Bullet style and Talbot style were both available from Ford back in the day . No doubt good looks and ease of accessibility back in the day helped their popularity . 

AND Roy's mirror is not a recent part made today. It is a real live part. True Day Two oriented, much better.


John

[Mikelj5S230]

I was also thinking about a clip on or suction cup type mirror that would go on the side of the wing window or frame, that is not permanently mounted and can be removed for judging......

https://www.globalindustrial.com/p/7-inch-clip-on-convex-safety-mirror?gad_source=1&gad_campaignid=21930336953&gclid=CjwKCAjwx8nCBhAwEiwA_z__0zjf9cmcW1J67xJX6hDbnpy34jJvcchMYzUSxVNpIGhF2IYEWriFGRoC20UQAvD_BwE

[98SVT - was 06GT]

That's not cool.  These poor movie cars.  As an aside, I got the long base bullet mirror and it still is not quite long enough to cover both holes on the stock mirror location.  Still faced with a drilling situation. 

One of the Ferraris got the worst of it. When they pulled into the rolling trailer the stuntman was going way too fast and ran the car through the front of the trailer into the back of the truck cab. He got fired on the spot.