I had a Asto van (2wd) for many years loved it.
Little over a year ago I bought a '05 with AWD and I hate it. Vibration on take-off (which the owners manual says is normal) and the gas milage took about a 25% hit. Plus it's slower. Never again.
In theroy a driven wheel is more efficiant but the transfer case and second diff. will more than make up for that. There's only a handfull of AWD supercars in history, with good reason.
Not to mention I don't know anyone that makes a lift kit for Cobras...
