Hi nub
Yes all the creature comforts are gone but they are very comfortable and grip you well and the bonus of a lot of weight saving over the standard seats
Fitting wise isn't too difficult, just time consuming and making sure they are safely fitted.
The Motordyne is very loud and with the ark decats even more so but it's not a daily driver so not too bad
No chance of passing a noise test on any track in this country now
I looked at many supercharged badges including ones similar to yours but I think I will be removing them from my car as I,m going back to the debadged look