Are you in Europe or in America ? In Europe ploughs are reversible and 3pt mounted up to 5 furrows and are used 25 to 30cm depth. In America ploughs are semitrailed if it has 4 shares or more, and used at 15-20cm depth.
I know Americans with a 4341 that said they had no problems with a 5x18" semitrailed plough. the 7341 itself would have no problems with a 4x16" reversible in European conditions (unless on tough clay) but i dont know if it will lift one. Our 5245 could barely lift the 3x16" reversible out of the ground, i had to back up a little to let the dirt slide off the shares before it really started coming up.
If your tractor has two assister rams, i'd say it will take a 4x16" reversible.