off a 67 ElCamino so will need to be shortened approximately 3 inches at the rear to fit under a passenger car ( easy job once you know where )
It's boxed so would be a candidate to go under a convertible.
Can also be used on a 64, 65 or 66. You would just have to use 67 rear springs.
https://www.kijiji.ca/v-classic-cars/ottawa/chevelle-elcamino-frame-1967-for-sale-2-000/1440898318?enableSearchNavigationFlag=true
If it was closer I would go have a look. Box frame are getting harder to find
