so two months ago i purchase an 06 pontiac grand prix with teh 5.3L N/A engine. Ive done some basic maintenance on it including flushing the antifreeze cooling system, replace fron cv half shafts, the hub assemblys on front, tie rod end links, sway bar end links, rotors, brakes and calipers. Ive also added a cold air intake as well. Im planning to change the transmission filter and fluid next month because the car only has 43000 miles on it. But my question is what else do you all think would be good preventative things to do to it. I know how to do alot of things on vehicles that ive learned on the two pontiacs ive owned and im adding a transmission oil cooler tomorrow. I dont drive the car like a maniac i just want to try and take care of the car so that it will last me awhile