So I found a few articles talking about stacking the capacitor value on the V847 to get different sounds. I found the right capacitor using the article HERE.
I added a SPDT on-off-on to toggle between a bass wah(47nF), stock wah, and a more throaty wah(12nF).
In between doing this mod and posting this update… I accidentally dropped my wah. The fall ended up breaking the switch, but I just ordered a new one. I should have it fixed next week. I’m also curious about investing into a Fasel Wah Inductor to replace the stock VOX one.