I just finished draining and replacing the coolant. Thanks, Alex, the drain plug was where you indicated - passenger side, lower block, between cylinders five and six. I reached it from underneath (on jack stands). The bolt is 19mm and was doable with a shalow socket (on swivel joint) followed by a 10 inch extension, driven by a 3/8 drive ratchet. The worst parts were finding the drain plug and getting out of the way when the coolant starts to drain. Thanks for the help