I have the manual mico lock, it will work very well if you are in a situation with a manual tranny, This way if you need to stop and your in a sticky situation, You can apply the lock. of just add a small amt of pressure to the brake then actuate the lock, then you can rev her up, and release the lock, like working the brake in a auto with your left foot while on the gas with your right. They work well in a manual tranny because we don't have three feet!