there's a company out of Houston that bought the DMC name and is selling brand new ones for somewhere in the line of about 60K a piece I think. You can choose for a hi-po motor to be put in for a whopping 197 N/A horsepower at the crank.
If I had wads of cash laying around, personally I'd V8-swap a brand new body and turbo-charge it, and for effect try to work out a system where the wastegate would bypass pressure until 88mph, then kick in a hefty amount of boost and have something from the front of the car shoot out fire and fireballs much like in the movies.

But that's just me....