Freebeard you have good ideas this one is too elaborate for my budget or lack there of.
But if I use deeper back spaced narrow rear rims I could suck the rear tires in 3-4 inches , per side , to be determined by measuring for max back spacing and the thin rims I install.
I could if lucky with back spacing have the ability to have the rear fender flares shaved to near flush, which would perform Very well with wheel skirts.
The car may end up looking nearly like the model with the fender flares cut off & wheel skirts on
I am going to go crawl under the car right now and measure for back spacing clearances
[edit]
I just checked the clearances and there is just 2" clearance before the current rims hit on the suspension. The current rims are 8" wide aftermarket eagle rims with unknown back spacing , stock are 7" wide.
I guess I will have to take a wheel off and measure the back spacing myself from the hub's surface to what ever it hits first.