The original Studebaker models from the 60s couldn't have square headlights. Those weren't available yet.
It was a round light, with a square bezel in '63 ( sold as a '64 ).... Square bezels were from a Studebaker truck in earlier years. Due to a parts supply, the Avanti went to round bezels in 'later '63 & then in '64.
( Round was a 'sporty' look, where, square was a 'luxury' look. )
Avanti was 1st with front disk brake option. It had a roll bar. An option supercharger or A/C ... one or the other..... the options filled the same area under the hood.
The Avanti had a top speed of around 140 + mph !!
This car had a MASSIVE steel undercarriage / framework to handle the performance, since the body is fiberglass.