The sportspack arches should fit the van shape. The body does need cutting to clear the front wheels on full lock. The rear arches wont sit properly unless modified to suit the different *body* shape of the rear-most part...
Below is a pic from my collection of 2,566 mini photos
...... note how high the car sits, thats because the arches are flat underneath, and upwards travel of the wheels can result in fouling on the arch... hit the arches too hard and the mounts could shear off.... extensive vehicle modification can cure this though....