Hmmm....
Sleepers:
Ford SVT Contour (Friend has one and it kicks ass)
Lincoln Mark VIII (Basically a cobra engine and tuning in lincoln tails

)
If you are looking at a kit car potentially, check out
www.factoryfive.com they will send you free info (got mine in a week) The kits are built off of the 5.0 Mustang into Shelby replicas. They perform like none other and are sexy as hell