Nah I don't mate, all standard, and has only started recently which I haven't changed anything since...I can feel it on the floor/pedals a little, and it did feel like it came from underneath around pedal front seats area this last time
Really bugging me now, jacked up the car also no snapped springs, regressed top mounds and coilovers as well, anything else it could be on the coils, surely if so tho it would be over bumps the harder the more of a knock?
Wondering if it is maybe a shaft but it didn't make a loud knock when spinning the wheels just a little noise from the box as obviously that will happen?