They're basically the same, except maybe for the color of some logos and maybe a little bit of sheet metal. The T2320 and Boomer 3045 is the exact same tractor. NH changed the name to reflect frame size and horsepower as opposed the arbitrary 2320 designation. The 2320 designation was only used for 2008 I believe. The TC45DA was the predecessor to the T2320. The features are all basically the same. I think maybe the headlight assembly may be a touch different on the 2320/3045, but they're the same size, weight, performance, etc. I know one member here refers to his Boomer 3045 as a TC45DA because more people know what his tractor is like. So long story short, it's the same tractor regardless of the name, kind of like a Ford Crown Victoria is the same car as a Mercury Grand Marquis.
