Do you think Chevy/Workhorse were much better? I doubt it. They are all trucks, not cars, meant to move gravel, not people. In high school I rode sometimes in back of an empty Chevy winch truck that was jarring.
The problem is in trying to keep costs too low. If a $30k stripped RV chassis was improved with independent front suspension, stiffer frame, and air suspension to mimic a DP, it may increase price to what, $45k at most? And if it added 10% to total cost of a Challenger, would buyers walk away?
Personally, I don't see Ford doing a significant upgrade to the F53 chassis any day soon because the volume used for RVs is too low. They have to share manufacturing with trucks to keep costs down.
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