whats it like to drive a 6-71?

Hello,

I lost the title to my current cuda project. I going with plan B and Thinking about putting a 6-71 Dpolished Dyers Blower on a mildly built blower motor in my 69 Dart. To have fun withand drive around on backroads, highway, events,
Question:
> whats driving an old school blower like?
> how will my gas mileage cruising on the highway
> can I run pump gas at 93 octane
> The 440 is a tight fit and what about hot headers