Damian Wilder

I have a 2004 c240 4matic wagon, recently had a leak appear from bellhousing. Pulled trans and replaced all seals in front of trans and reinstalled, still have a leak. Now looking at a c320 4matic parting out to just throw a lower mile trans in. My car has the 722.667 5gtronic trans, the donor car has a 722.668 5gtronic trans. Obviously the bell housing will be different and I can swap that, are there any major differences between these transmissions that would keep me from using the 722.668??