[Blas]

It is correct that Superformance cars never car from the factory with push button starters.

I have it shown as a "optional wiring arrangement" on my wiring diagrams...
I'll cut and paste the information to add one to my gallery later today... (done)

But also be aware that there were 3 different ignition switches used on Superformance cars over the years, and many of the original switches could have been swapped-out by a previous owner, they were a problematic item because of heavy key chains and the nature of the beast in general....