The 777F doesn't have any problems taking engines in stands. Ok, it couldn't take a GE90-110 built up but it can be shippped in fan and propulsor modules. We were also told on training that a 744/748 couldn't take a built-up GE90 nose cowl for transportation also but he aslo came out with some other stuff that we later found out to be "non-factual"
Like you say, pipelines etc are best left to the true nose-loaders like the 744F/748F due to restrictions loading through the side door on others.