your vert is indeed a commando car, and requires the resonator with the large stainless tip, which fills in that cut out notch very nicely. Accurate exhaust systems in oregon sells a complete factory style exhaust system, including the resonator. google them for pics and info. many of those cars came without a sway bar. your lower control arms have the sway bar link tabs on them, so its easy to obtain a factory sway bar and bolt it in. I have 3 65 valiant converts and 1 65 barracuda commando cars, and am a certified early valiant nut/enthusiast. let me know if you need any help sourcing parts or have any other questions about your 65.