Thanks, but you'll have to forgive me, I'm a bit of an amatuer when it comes to some of these parts. What is the load leveling? Also I might as well ask while I am here. Do you know where I can find a block heater for the 79 300 td? It seems to have a bit of a hard time starting cold.I've called a few bone yards in my area, but so far unsuccessful, I dont think many people in utah bought mercedes in the late 70's. I hear I can spreay a bit of ether in the carb??? Any tips?