Ok I am working on buying another Mustang and it most likely will be from the lower 48, since they are not very common here in Alaska. Now I had the local service center on base install the block heater in my explorer and they charged almost 100 bucks with the cost of coolant. It is a big must up here to have one as the temps can plumit to 40 to 60 degrees below zero for days at a time. And my poor car may not always have the garage and will be parked outside alot when at work. Has anyone done the install your self? What would you rate the difficulty? Is the freeze plug hard to get to? I most likely will do it at the auto skills center where I will have access to a lift for jsut 5 bux an hour. Is there a how to guide anywhere? Most likely looking 99-04 but may end up with older SN95. Thanks for any help guys.