How To: Install MR2 Spyder Seats
So you want to install Mk3 seats in your Mk1. It’s really not that hard.
Torque wrench that can do 27 ft/lbs.
14mm combination wrench (ratcheting is a definite plus)
Drill (and a metric buttload of crappy bits or 3-4 really good ones)
Safety glasses (of course)