In the C-130 world, the US bought only standard length planes. Once the Js went into production, the US (and Brittain and many others) just continued to buy the standard length. After a short period, the US and everyone else realized that with the much better power available in the J, it only made sense to buy the -30 stretched varriant, and so nearly all orders were converted to the longer version. That is why almost all Js you see are the long plane, and the early short version is rare indeed, and why some folks equate (incorrectly) that all short planes are not Js, and all long planes are Js. In reality, there are some long E's and H's and some short J's out there . . .















