...Not sure why anyone would pro-street a 4 dr, but agree with Rory that it should be worth the $5k just in parts.
Well, I would say that yes, probably nearly every "Pro Street" endeavor has been to create a flashy show car, not so much an actual race car. Taking a closer look at this Torino, I don't think it comes under the heading of "Pro Street", especially compared to others that were built at the time. I see a family effort to build a fun street/strip car that hooks. The diff housing sits on factory leaf springs with the ladder bars added; no four link. The interior is all carpet and original upholstery/door panels/dash pad. So, no alumisaurus surroundings. The only deviation under the hood was a "Thunderbolt-style" shock tower treatment for added clearance. So, no tubular work. Obviously, no fancy paint job, just a respray of the original black.
So, in my opinion, not a Pro Street, but a regular car with tubs and a roll bar, using a car passed from father to son. I like the 4-door thing. Different. If a transporter from Idaho to Arizona can be found, this car will never be parted out.