Think I'm using a mk3 shifter box, not 100% sure though, might be corrado, as I never removed it. I used washers on the 4 bolts that bolt it up to the tunnel, these washers overlapped and held the box, whereas bolts without washers sat just outside the box. In fact I may have had to drill slight half moons into the box edge where the bolts sat, and added washers as the bolts shoulder wasn't enough. Once you drop the old one and offer up the new one it all becomes clear. I did mine blind, purely on feel with one side of the car on axle stands + fear of getting right under. A ramp/pit would have been nice