Charlie,
that was a Flux Capacitor, easy enough to obtain, but where are you going to get the 1.21 Jigawatts (or is it Gigawatts?) of power needed to operate it?
Also If you go looking for Plutonium these days you will certainly wind up in jail as a suspected terrorist!
Your Galaxy 500 is also heavier and isn't made of Stainless Steel so it might actually take a bit more power than that!
If you have the 390cu engine with a 4 bbl carb getting up to 88 mph shouldn't be a problem. Getting it stopped in a reasonable amount of time with 4 wheel drum brakes might be difficult however
Can you tell I saw this movie 13 times in while it was in the Theater
Eric