Permission is not an issue where excessive blood flow might be.

This car while perfectly suited for the class where it holds the record XO/PRO would not be fun to run anywhere else. Because of the Production class rules it can not have an "engine swap". Evidently a 235 or 261 is OK because they are considered the same "engine family" as the 216. Any other engine would cause a change to a class to where the records are over 200 mph and that speed invokes an across the board rule change in tires, fire suppression, chutes(175), driver gear and possibly more. Some of the classes where you could run the car have no vintage class for the 302. With a 302 or 292 it would be in the D engine class and be heads up against everything with from 261.00 to 305.99 ci.
The one other class would be XXO/PRO which is one step up with a lower record (in the 2012 book) of 134.637. You would have to run an speciality head but again because of a special rule in the Production class the head would have to use stock port numbers and design, no advantage just not a stock head.
This car would be a great deal for someone who wanted to build and run a 261. A beautiful well built record holding car with a good shot at two records. 261s are not my thing.

Now if those guys with the new parts wanted to sponsor someone.....