You're wearing one! Take a pair of old underwear and cut off the elastic waist band. Mark the elastic at even increments. Drill through these marks. If you stretch the elastic, the marked increments will widen with even spacing.
By the way, you will never see 90% of the rivets you're installing once the car is done - not that it matters!
A forum community dedicated to Factory Five owners and enthusiasts. Come join the discussion about performance, racing, conversions, modifications, troubleshooting and drivetrain. We discuss MK4, GTM, 818, Type 65 coupe, roadsters, and more!