440-powered '68 Satellite(auto trans) needs a little help. Not trying to be too much of a race car but dangit the ease at which the tires spin is getting old. Now, they're just plain ol' coopers on a snubber and xhd springs, with a 373 gear..and I know better than to expect too much on road surfaces but what would you all think is the better addition--something like a set of cal-tracs, different springs, or simply some better tires? It's a nice running engine making an estimated 475-500hp in a 3500lb car, and honestly the tires didn't go up in smoke as eagerly before I got deep into the tuning aspects (de-tuning is not an option lol!) Thanks