The only "conversion" my 1975 "absolute bottom of the line ECB" will ever see is when it finally goes to the scrap dealer - converted to razor blades or the left front fender of your next new car. And that is a lot of smokin' down the road.
I have the same smoker. Charcoal though. drilled some holes in the charcoal pan for better air flow. Took the legs off and set it on concrete blocks so I can have access to the coal pan. The gourmet version took care of this problem.
Now that I know the supplied temp gauge is 65* low, I will planning on adding another temp gauge, if I can find one.