I'd take a $60k PJ over a $60k Shelby GT500. At $40k, the Shelby begins to look a bit more compelling.
Btw, the $15-$25k markup on the Shelbys is why I ultimately went the Saleen route last summer.
I have now HEARD of Shelby GT500s finally coming down to MSRP in some markets, but I have not seen it happen yet here in Southern California.
On a related note, I was watching Barrett-Jackson last night on the Speed Channel and saw a '78 Corvette Pace Car (remember those black and silver models that everyone raved about almost 30 years ago?) being sold by the original owner. The Vette had something like 117 miles and still had the factory plastic wrap on the seats. It only sold for about $45k; almost exactly the original purchase price adjusted for inflation. That means the owner took a LOSS on the car considering inflation, cost of storage, tax, title, insurance (if any), etc. Those Vette Pace cars were bought up by collectors who were sure they'd be worth a mint in 20 or 30 years. In fact, some of those cars were being traded at 100% markups when they first hit showroom floors. Ultimately, the high demand for those cars caused Chevy to INCREASE PRODUCTION so it could build one for every Chevy dealer (6,000+). Starting to sound familiar (10,000 Shelbys for '07 and another 10,000 for '08)???
Ultimately, buying a NEW car with hopes of it one day being a collector car is about as risky as trying to time the real estate market in Vegas or speculating on the Netherlands' tulip market in the 17th century. Bottom line, if production/supply can be increased, then it likely will increase in a heated market.
That being said, I'm about to take off for Vegas in a few hours. Wish me luck...