On the 1971 318 Challenger I got from original owner had a Midland Cad plated one just like Mastershake shows.
That car was not messed with by owner.

EK3 showed pictures of a plated Midland Ross booster, my 71 and the rusty one I posted pictures of are both Bendix, just to keep everything clear. You can’t keep track of the players without a scorecard!

So lets boil this down to what findings we have.
I enter a judged show in a 71 440+6 Cuda. I have a Midland Ross Plated booster. Am I going to be told that the booster is incorrect?

Does this help at all?

A simple answer is no. Only the first 71 cars got the black Bendix. I had one of those cars that was early built and it had lots of leftover 70 parts in the brake system per date codes. it was parted out but I have the build sheet and parts. It had 70 style seats. Those NOS 71 Midland ROSS units I have are dated and have the correct part NOS stamped on the tags for 71 cars. They were made in mid to late 1970.

Thanks all!
Im still a little confused on part numbers being correct for the 71 440+6 4 speed from disc.
I have been told:
3461264
3579272

I just found a 3580152. Any idea on that application?

I found a build date on the car of November 70 so this all may be for naught. Should this car have the 70 painted unit?