I could be missing something really obvious here but...
After starting to put together my 998 project I was under the impression that apart from length all the 748 to 998 plug leads are the same fitment at the spark plug end. Thing is when I try and fit some of my 996 leads to the 998 motor they won't stay on the plug. I have to push them past the point of sealing on the cam cover and this sprung load pops them off the plug.
All the advertised ones on the bay look the same so what am I missing?