Probably fairly fast. In the article and list of mods they mention going to special shocks and springs, for higher clearance, shocking and rebounding. Also noticed a full roll cage, no doubt giving it extra stiffness albeit more wieght. But I'm sure they tweaked the motor for higher output for extended periods.
We all know how nimble our cars are, just imagine driving one specially built to race/rally. I'd love to take it out and flog it around some rally course and see for myself, but, If wishes were horses..
