And still waiting for the 3D universe to cough up a 223-261 Ford inline.

Both of the donor kits needed for an accurized '63 are relatively common and inexpensive, I'd lean Revell cos it already has the Y-block.

Just depends on how much energy a builder would devote. I wouldn't blow up a bunch of kits in service of the idea.

That said, I think SS popped a '60 body on an AMT '53 chassis and it looked all the business when it was done.