I'm nearly 6'4 and had to put a seat lower kit in my 1st gen I viper. I went with the 1" kit so I could adjust the seating. However, after buying my 2nd Gen I, I realize I have way more room in this one than the other one (A LOT MORE ROOM.) Talking to the previous owner, I was told that he had the seat removed and modified, so it sits way low now, still moved back and forth, and I have a longer reach to the foot pedals for some reason as well. The mirror in the car with the 1" lower kit is always in my way (I hate that.) In the other car, I sit low enough that I am under the mirror.