As long as it runs its A$$ off with whatever power it makes I will be fine.
If I was to go for more power and a small block R series block would be the ticket for sure...........
Next year a 67 Coronet Big Block and 800-1000hp twin turbo or a supercharger set up will fit the bill!! That build will start with a aftermarket Block probably the KOLENO that is cross bolted on all 5 mains.