[PANAVIA]

Well - my personal preference is SPF , the ERA is a fine car and a nice piece of equipment. But an SPF is a very drivable piece of equipment.

For the high MPH cruising I would opt for a 6 speed and the 17" wheels. In that way you can get modern High-Perf VR/ZR rated tires at any reasonable expense in a 15" tire.

For ease of use you may want to consider a 351W based engine. --

My 0.02.