Ok, double apology required lol
The Cruz stuff is what I bought for the 330d I had because it was a saloon, but with the S4 I can't remember why but there was a reason why I didn't use the stuff from Roofbox, possible out of stock for the stuff that I wanted. I actually got my roof bars and extras from Halfords so first apology for that.
I've had a look at them and they don't have dimples to match up, so second apology for that. I think what I did do was use the holes in the roof rails as a guide to line the feet up for correct overall placement - which is very handy of them to be honest.
Here's everything that I got and it all fits great. What I like about this setup is that I can leave the fitting kit and foot covers attached to the roof bars at the time, so when going to fit all I have to do is place the roof bars onto the car in position, then unlock and remove the foot covers which gives access to the hex bolts. I simply tighten them up and lock the foot covers back on. Takes about 2 mins. It's just the reverse to remove. I've got to rush out now, but I'll take a photo of mine to show you what I mean.
Here's all the parts I got:
Exodus Aero Bars A120 (Pack of 2)
Exodus Foot Pack FP3 (Pack of 4)
Exodus Lock Set
Exodus Fitting Kit R007 (Pack of 4)
It cost £203 in total from Halfords last July.