Moving myself and my newly acquired 98 Forester (5spd) back to Alaska and want to install an engine block heater. I've done this in my other vehicles by simply knocking out a soft plug in the engine block somewhere (as indicated by the manual) and installing the appropriate heater. I'm assuming it's the same for a Subaru but wondering if anyone's done this and how difficult it might be and/or if there's anything special I should know? Typically it involves draining the coolant, punching out the soft core with a mallet and drift, installing the element and running the plug out through the front somewhere. Never forget to add the coolant back in...