installed mine the other day. I think i'm still the first to put hIGGI's shifter on a S5, so here are a few things i encountered.

when i buttoned everything up the shifter was very difficult to move. This is in-part due to the inner ring not being quite the right size. And a few millimeters might need to be shaved off for smoother action. I didn't have time to do this so i made some extra thick gaskets and used them as spacers so the shifter isn't quite as sandwiched. The shifter is still tough to move, but managable.

Other than that, everything went easy. I'm going to try and find out if there is a diffence in size for that inner ring because i would like to iron that small problem out. Great product hIGGI, thanks again.