yep, i get great gas mileage in my Z even for as much as I beat on it. You will not be dissapointed in an ls1 and I am willing to bet once you get it gas mileage will be the last thing your worrying about.
__________________
R.I.P Dad.
The greatest man I've ever known.
6/14/43 - 7/11/06 2:24am