You mean adding a gain stage in it? no no as in, I have my MXR Dist III, and i want to put a clean blend circuit into it, so the output will be a blend of clean and the wet effect, preferably with a knob to control the overall blend of the two.. so where would i put the blend circuit into the exist...

If I wanted to drop this circuit into an existing overdrive pedal, such as my MXR Distortion III, where abouts in the circuit would i want to put it? I have a pretty basic understanding on circuitry at the moment but im hoping to try to learn alot more from here... cheers.