It's not a necessity, but while you've got access to the pedal wiring, you may want consider installing a switch on the clutch pedal that switches between the regular wiring and a 5k resistor.
When mapping the controls on some emulators and games, the clutch pedal will register constantly and mess stuff up unless it is held exactly halfway down.
The 5k resistor will make the pedal show as being halfway down (axis centered).
The in-game controls are fine after you get them mapped, but it makes mapping them more of a PITA.
There are also one or two oddball cases where the clutch axis is hard coded as something else.
Nobody but me has ever had an issue with it though.

I reaaaalllly like driving around offroad in the game Fuel. It is supposed to only supports xbox360 controllers, but some direct input controls are hardcoded in.
You can create a virtual controller with x360ce for the controls, but the non-virtual clutch axis is still hardcoded to gas/brake and makes my vehicle go in reverse all the time unless the clutch is held exactly halfway down.
So the next incarnation of my cab will have a switch on the clutch just so I can play that one game.
