Even without any alterations the car runs like a raped ape. You push that pedal, you'd better hang on....
I had someone bet me new rims and tires that I couldn't boil the rear skins off it. I ended up with new rims and tires. And that was before installing the trans brake and line locks.
I loved that car. It's my "one that got away" and I will replace it some day with another one. Possible a 1969 this time.