Thinking of buying an extended shift lever. I like the Walters workshop model. Can anyone tell me if you can use the stock lever for the toe and the Walters for just the heel, so you wouldn't have to buy two levers? In the Dennis Kirk catolog they don't recommend the Walters model for a heel shifter, but when I talked to a sales person on the phone they didn't know why. On The Walters workshop website and the Drag Specialities catolog they are listed for both toe and heel.