3406c to 6nz engine swap

Hi I had my shop swap in a 6nz where a factory 3406c was in my 1992 379 peterbilt. and the problem now is entire engine is sitting almost 2" forward than where it was with the 3406c making my drive shaft to short actually pulling the carrier bearing out of the rubber it sits in. talked to someone said they should have not been an issue but there are. anyone ever have this problem or know what went wrong with the engine mounts? what part #'s for front motor mount bracket and both rear motor mount brackets should they have used for proper fit

 

Yeah that was my first thought but the guy that done swap said he has never had this issue before since they must have made a mistake somewhere just wondering if anyone had done this before and had the same issue and if not what motor mounts did they use ? Just seems wrong to me that engine would be shifted 2" forward

 

so your saying the front engine mount bracket thats bolted to the 3406c engine is the same as 6nz ? because they changed that bracket along with the brackets that bolted to the flywheel housing im thinking there not the right ones thats on it part #'s of the ones you have would be great

 

no brakesaver

 

e model uses a different flywheel housing than 6nz doesn't it ?