Can i swap the u341e transmission with u340e transmission?

The *salvage dealer* has the most accurate interchange information obtainable!

I would avoid any situation where transmission replacement is not "like for like". In this case, we have 10 model years of difference. It's reasonable to expect that even though internal components use the same parts in a rebuild kit, the electronic portion is most likely completely different. Vehicles have come a long way in that ten year period of time in technological advances. The engine's processor -- even if the wiring plugs in, which it probably won't -- probably will not be able to communicate with the replacement transmission. Agree with Pushrod on the electronics -- I would have to say that this endeavor is probably a bad idea.