SS/B Barracuda project

Well, I´m going to rant some more about these alu. seat brackets that I doubt was made for the A-100 seats used.
I think everything was planned and checked as to how these cars was to be build, prior to the final decision Chrysler made to go ahead and do it. It means Tarozzi or whoever made the blueprint did not have the A-100 seat in mind at the time. This is late 1967 I suppose.
A look at the seat used in the Mule Car seems to be the seat used in the Porsche Speedster and looks like this.
20180918 porschestolar22.jpg
Seat bracket looks to be covered by something, but could very well be something similar to what they than looked like.
Than something happened, and Chrysler change their mind about the seat and used the A-100 seat. Maybe weight was already down enough. Maybe cost of the Porsche seat was to high??
Again, the wide part of the bracket does not fit the seat rail. But if you look at the ´65 SS cars, wide side is up and narrow side of the bracket is bolted to floor.
Pic of what the Speedster seat looks underneath.
20180919 speedsterunder.jpg
The narrow part of the bracket do fit the seat rail, but not in the utter nuts, so not in an optimal way. Probably by pure coincidence, or by a last minute change at the vendor.
Enough of this now, since this will not change the way I´m going to bolt these seats. Just would interesting to know how all this came to be.