So I was at a stop on this back road, and as I went foward and turning right, I hit a small but fairly deep pot hole. It made a nasty sound, but I didn't think of it much as I've hit pot holes before, ...

I have a 2014 Mitsubishi Triton, five-speed manual transmission, and when driving or stationary in neutral, there is a knocking sound coming from the front end of the gear box (closest to the engine).