unplugging the ignition module cuts spark AND fuel, so no need to unplug the injectors. for an accurate torque you do need to have each one at tdc, i know its a pita, but do it right. easiest thing to do for coolant drain is to take out the front knock sensor, its the block drain. you will most likely have NO coolant to worry about, if so maybe a drop or two, nothing like if you didnt use it. put a dab of rtv and i mean a dab onto the end of the threads of the lim bolts, some see oil/coolant, just extra insurance. other then that, take ur time and it will go smoothly except that one or two exhaust manifold bolts that want to be stubborn. maybe later you can buy one of my intercoolers