Well, the guy doesn't know what he has, BUT if it's an original Commando 273/four speed/handling package Valiant sedan it would be worth having. The notation in the Dymo label about both sets of points indicates a Commando car.
The headers are something weird. Both sides have the centerlink go between primaries. Looks like a no hassle well fitting design, wonder if they could be reproduced? I has also been converted to 8 3/4" rear axle, which is pretty natural considering the age, V8 and four speed combo. Those cars were pretty popular rallye cars here, but the factory insisted on using the heavier and less rigid barracuda in the international rallyes, the barracuda was way slower than the valiants. Here is one old local rallye barracuda for sale, it actually led Monte Carlo rallye in 1966 before the rear axle broke: http://www.trianglemotor.com/fi/barracuda.htm