Well mine is an 80 gallon, twin cylinder model that I bought scratch and dent for 1/2 price (was supposed to be $850)
As it is way bigger than I need I don't use it too hard, but I haven't had a minutes trouble out of it.
If don't know if they all are or not, but mine has a campbell hausfeld compressor pump on it. All the part #s are the same as the similar ch model.
'92 Fullsize, swb rc
5.3L/T56 conversion, comp XR275 HR cam .566/.568 lift 222/224 duration 112 lsa, K&N Filter, Nelson Performance tune, Keisler shifter relocation kit, Boyd Coddington Smoothie II 18x8 235/55 up front, 18x10 295/45 out back, 2/4 drop.