That's behind the spring.
There might be enough room for an 18x9.5; I'll have to check the strut body clearance to the rim. Obviously on an '88 you'll have to deal with the ebrake cable as well as the trailing link if you're running fieroguru's camber correction brackets.
Here's a pic from yesterday:
You can see evidence of rubbing in the large area on the right, which goes through to the metal underneath the plastic liner. Also at the top left that's a hole rubbed through the plastic liner. I don't think it hit the metal there. On the other side of the car, the end of the quarter panel belt molding is also worn through, but it might have been loose.
This is the inside of the top of the fender lip, looking out from inside the wheel well:
You can see the tire rubbed through the vinyl here into the SMC base (white). Obviously if this were a metal bodied car a little bit of fender rolling would fix this.
Finally, here is the ebrake cable and trailing link worn through to the metal. Notice that I've already ziptied the trailing link closer to the frame than it normally is.
![Image](http://i.imgur.com/K6IcYjQh.jpg)