Yeah the four speed knob was the giveaway , but....
Buick ,in the sixties, had an electrically switchable stall speed converter for the 400 turbo. A friend put one in his 383 Vega. Nice and tight on the freeway, stalled almost 4000 at the flip of a switch. Wired it up to tighten up again in high gear. A great idea that disappeared for some unknown reason.
