Nice idea, but what kind of reserve tank will keep more than 170 bar ? And if you find one - how long will it last ? At least I wouldn't like to drive around with a large bottle of CO2 on the passenger seat. Hey this brings up another idea - why not use NOS for the struts and the motor ? ;-) By the way, adjustable door struts are not only feasable, they are available ! Elvis & 6548 If "adjustable" door struts are truly feasable, then the real project here would be to have self-closing doors. The car would have a pressurized reserve tank (a la the Bricklin) and air valves. Open the valve on the strut, and the door lowers. Then close the value and repressurize the strut from the tank, making the door openable again. Combine this with the remote door openers and you've got a car that can flap it's wings! Gus Schlachter VIN #4695 Austin, TX