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hey hows it going? the names grant and im new here as well new to dodge kinda as i just got a 2003 durango 4.7l 4x4 with the automatic transmission. so far ive replaced alot on the durango and done afew upgrades as well like a cai, thrush glasspack and E3 plugs, and i plan on the electric fan conversion/clutch fan delete. also ive shaved a little weight like running bourd's and anything not needed. if anyone has any ideas on other worth while performance/mpg upgrades id be very gratefull. thanks and welcome to all.