Yes, v5 is the latest one I’m using. It’s tricky to print, since it needs support, but the two-piece ones had other problems, so I recommend the v5 now.
I just cut the laser line mounts off for the one I’m using now. There is at least one person on thingiverse who has a laser mount for the universal system that doesn’t have the line mounts, but cutting them off is easy enough to do.
That piece for all the connections on the z tower just clips on: http://www.thingiverse.com/thing:1273861. It’s designed for keystone network cables but can be adapted to a lot of other stuff. It also has 8 solderless connections in the back, which can be handy.