i ended up not cutting the lines. i had to add a couple of bends to run the line a little differently than the old ones but it came out ok. not as pretty as i would have liked but they are fine. especially since i had to completely rebend the left side line.
both sides were app 5" longer. the tech at Moss seems to think they were changed at some point to route around the spring perches (his words not mine) does not make sense to me since the old lines did not run over the u-bolts anyway.
if i had not had the old ones to go by, i would probably have thought these are run the way they were always done so it is ok.