I recently received a pedal set from Ultimate Pedals, the install was easy and they look fantastic. The accel pedal is flat and really could use a but if a curve to fit as well as it could so I took it to a body dolly and slowly dropped in a curve which worked out perfectly.

Install is easy,

1. Put something down to catch shavings from drilling, I used paper towel
2. Remove rubber cover from brake
3. Clean and dry pedals, cover in tape to aid in marking
4. Align pedal covers and pedal, mark through hole in pedal cover
5. Use center punch on markings, remove tape
6. Punch and drill a pilot hole in both pedals
7. Since accel is plastic and doesn't have a flat back, I used the supplied standard screws to attach accel pedal
8. Drill out brake pedal hole to fit hardware, supplied machine screw, washer, and locknut
9. Install brake pedal
10. Clean up and done.