I'm currently in the "feasibility study" phase of making an expo build on a 2004 Cayenne Turbo thanks to a lot of great information here and on Rennlist. I suppose I'm at about phase 4 now (acquire, shake down, maintenance, tires) and went with the BFG KO2s in 265/65/18.
In my case, it appears that someone has been in the inner fender liners before and lost some clips/fasteners. My guess is they were trying to clean the intercoolers, which looks like it's going to be a regular thing - mud and leaves just settle down in there and there's really no good way to get it out short of pulling the inner fender lines to expose the back and the bottom grilles to expose the front. The plastic was a little out of sorts, but even before getting all of the fasteners back in place (still waiting on a few clips/speed nuts) I was able to get acceptable clearance at all suspension heights:
I used a heat gun to soften the plastic and move it inwards (potentially back to where it was stock?). That pic is with the suspension at Normal. I'd really prefer to be able to run this height while on road with this set of wheels on and it appears to be fine now even on low. Once things are buttoned up I'll be taking it out for some light trail test runs before proceeding any further on this potential build.
I'm hopeful, but also realistic. This isn't my first time around doing something like this and with the benefit of age and the school of hard knocks I've learned to wade in slowly and make sure the outcome appears to be what I want and not just "well, I'm so far along I have to finish it now".
Obligatory full shot, but there's not much to see: it's dead stock with a set of tires on it's stock wheels:
Bonus light body damage on the back bumper and rear deck as I got rear ended in stop and go traffic a week after I bought it........Waiting on my PDR guy to look at the rear deck and mulling over whether I care enough to replace the rear bumper cover due to some scratches and gouges (thinking no). I was able to get just about everything back together acceptably on my own with minimal parts, so the insurance payout is covering the first part of this build.
Thanks again for all of the info in the thread so far. Now that I'm getting started on this I'll be reading regularly.