I have --- I'm 6'5" tall and do notice the same tightness you have.

My thoughts:
The Lowered Seats option helps more with head room than leg room; If head room is your problem (you didn't say it was), then the other respondant was right about it being better/cheaper to go the Sunroof Delete route; Going with Electric Seats helps in both leg (just slightly) and head (a little more) room; Make sure your Steering Wheel is adjusted toward YOU as much as possible (somewhat counter-intuitive, but it helps legroom for me); The biggest help for legroom is to do the "GT3" or "Console Delete" modification --- This takes out the Front Center Console giving you tons more RIGHT leg room with the only drawback being a slight loss of storage area (Note: This won't work if you have the PCM unit and if you have heated seats, you'll need to relocate the controls for that).