I have to say im 6', 3" and i have yet to find a seat position im comfortable in both day and evening driving, let me explain, one thing I have noticed is that in the morning im taller and my hair slightly touches the roof and I dont get enough lumber support. So i have to screw with the seat. However in the evening driving back from work my head doesnt touch the roof and I can get a seating postion with a little lumberby adjusting the seat, but then come the mornign i have to adjust back. Now what I would like is the seat to drop one more two more inches and have an adjustable lumber support, does the SLK seats have an electronic lumber adjuster?