If you can afford it and are willing to spend the 💰 ney and huge amount of time to do it, well then go for it! But reskinning a car is a great deal of effort. You can treat the inner panels and rust proof or blast or remove any hidden corrosion while the skin is off. From a $ point of view, were you to sell it, the reskinned car is going to be worth big $ if done right and finished.
This is a drag car, not a street car, right? Street cars have gone down in price for certain cars but, a properly done car will always pull down big money. Sometimes I have seen a drag car get turned back into a street car because the value as a street rod was higher than as a drag car. But, not real common.
The market has been funny the past 5-10 years.
Recognize that those with money who lust for these cars are dying off as they were young when these cars were new or they were hot muscle cars when they were in their teens or they owned one. So, their bubble will pop as they age out and the newrr cars appeal to the younger crowd.