i have a 88 sami with a spring over lift and 30 in super swampers gears are stock iam only getting 15 miles mpg in the city and 13 on the highway motor is solid the is the problem iam sure thinking about a weber iwas wondering if any one has a set up close to mine with a weber if so what kind of mileage do you get and how does it do i no i need gears thanks