35" tires and 3. 73 gears are going to be real slow towing. the increase in tire size means more distance per rotation. taller gears like 4. 10's will help. im not sure whats available for you gear wise but you might want to check it out. good luck.
97' 2500 CC 4x4 5spd LB 3. 54's k&n, 4" catback-cat, 2" level on friday Oo.