Looks possibly like @BuicksB4Anything (Quentin Patrick's) shop. Maybe the car he bought from @GSXER & was selling but hard to tell. Those yellow Buicks all look alike.
It also has a type 1 shorty console, which, if original, adds a little evidence as to when the change-over occurred.
The one I posted? IIRC, I took that photo outside of the Ruge shop in Eureka KS many years ago. Memories fade, but in any case Mike G would be familiar
I would get the body completely off and look at the entire frame before making a decision. If there are more areas,I would would get another frame. A lot of frames look good under the car,or even when it up on a lift,but the body mount holes can be rotted out. Get it apart.
