Couple questions here. Does anybody know where Jeep installed the stock block heaters on the XJ's? I am guessing the center casting plug would be the best but would check here. Also which size block heater is it? Also where does everybody like to buy their parts? Specifically I need a head gasket set and new bolts and also a muffler. Anybody have any suggestions on brands? Thanks

 

i got my gasket set from napa it was a felpro somewhere around 50-75 bucks and on my wrangler they sell thrush mufflers at auto parts stores im sure it will work

 

Myself I'd go dealer for the gaskets and any parts store of choice for the muffler. The block htr is usually located in the front drivers side frost plug.
Good luck!