Carburator 24/24 on PX150

hi, we have a px150E, and i want a buy new carburator, in the webpage find 2 options, 28589800 24/24G and 28532800 24/24E, what is the difference of these two items

The G carb is for a T5 engine, it has a shorter body to allow room for the bigger T5 air filter.