If it's in good repair the stock suspension should be fully adequate. It will not be as smooth as a car, even a period car. FWIW we ride shared on a VCCA tour in Texas last fall with a couple in their '54 BelAir with a 235 & Powerglide. At the end of the day, on the way back to the hotel after the day's tour, we routinely drove 70MPH on the freeway with NO issues.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
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