I took the veilside kit and decided to make a 1 piece rear bumper for my car.. i was sick and tired of the joint cracking all the time... I'm very happy with it and think it's one of the few kits that looks good on the Z.
i also have the veilside skirts and i'm still waiting for my WW nose...
In my opinion, the WW skirts wont fit the look of the veilside rear. But it's ultimately up to you... but go with the Veilside rear...