So I just ordered a 70qt Coleman Xtreme, as my 10gallon Home Depot cooler is getting a little tight lately with some of my batches. I really don't want to repeat the searching every hardware store in town for the correct parts to build this mash tun, so I plan on just ordering the Cooler Bulkhead kit from Bargainfittings.com. They ask what type cooler it is, and since the cooler is not in my possession yet (gotta love Amazon), I don't know the wall thickness. The options are 1.5", 2.0", or 2.5". Anyone with this cooler want to help a brotha out?