Looks sweet that man!
Some of the vibration you mentioned could be from the stiffer or solid bushes you’ve fitted, quite a lot of gearbox vibration gets transmitted through those. Either that or whilst in gear the shifter actually sits on top of the the exhaust, I know when I had mine adjusted to as low as it went, so the shortest possible throw, it’s would knock into the exhaust. Have a completely different setup now but the Hybrid Racing one does looks good man! Well done