This is a stock looking 66 Valiant Ute (Valiant Utes were not sold in the US). I also used a Fireball 500 chassis for a curbside stock 66 Barracuda (HUG body) and a resin 63 Valiant.

I added 0.100 evergreen stock to the rockers to widen it and added the torsion bars. Exhaust and motor were from the Lindberg 64 Belvedere. Wheels & tires were Modelhaus items

The Fireball chassis has the right wheelbase and no exhaust, while the 69 Barracuda has molded in exhaust and a slightly longer wheelbase. For a high detail chassis, you can use the new tool AMT 71 Duster but you will have to shorten the wheelbase.