Mine was a little quicker off the line even with my 31" tires, I think it's because the DOHC revs a little easeir. I think gas mileage was about the same. The SOHC has a lower 1st and 2nd gear to help it get moveing but once up to speed I think they are about the same.
Dennis

95 Sportage, gone but not forgotten.
98 Jeep TJ, 4" Zone springs with RC Long arms, Ford 8.8", 4.56 gears & Detroit locker rear, D30, 4.56 & Detroit Trutrack front.