http://www.partsamerica.com/ProductL...e=1415&PTSet=A
Here's a block heater I found for your vehicle.
This is a tank type heater, you connect a coolant hose, or drain plug to the side intake(silver) and coolant gets heated. It then goes out the top,(red) and goes in a continuous flow, heating the coolant. I couldn't find a tank type for your vehicle, but this is what mine looks like. It looks more simple than using the freeze plug cause it only takes connecting hoses to the the ends, and it came with all the hose ties, as well as a Y-connecter, and it basically the same process as freeze plug. drain coolant, attach heater, refill coolant, run engine, add coolant till it's back to level. You might be able to find one, you'd just have to look around. they might have a universal one you could use.