I've been working on converting a 40K Space Marine Tactical squad into a 30K Veteran Tactical squad. It's a lot more time consuming than I imagined!
After cleaning up all the parts I then proceeded to cut the knee caps off to green stuff some MKIV knees.
After green stuffing the knees I then built the bodies, leaving off the head, arms and backpacks.
I bought the Emperor's Children helmets to save time, rather than converting the helmets from MKVII to MKIV. The Sergeant I built from a Palatine Blade body. I have since Primed all this.
Needless to say, it's been a time consuming few days and I still have another squad to complete. Hopefully the end result will be worth it.