A 106 GTi will happily do 0-60 in 7.4 secs in standard form. It will p1ss all over any Golf (standard v standard) through the twisties. They are great little fun cars to drive, just not built very well.
The 306 GTi-6 is even quicker than 106, then the 306 Rallye is quicker still. Don't think even a VR6 could keep up with a 306 GTi/Rallye, they have 167bhp standard and don't weigh all that much, VR6 unfortunately would definitely have no chance through the corners.