Generally speaking, the Corvettes, f-body's and Mustangs of today are low, mid and high 13 second and 14 second cars right off the showroom floor. Some of these cars can even break into the 12's with a good driver (certain high priced models). As mentioned earlier, you would have to do some SUBSTANTIAL performance modifications to a Classic Mustang to hit these numbers. Many times these modifications will be a tradeoff to comfort and reliability. Handling wise, a classic mustang handles much like a Milk Truck. But for cruising, nothing turns the heads or stirs conversation like a nice classic Mustang. It all comes down to what you want to do to the car and what you are willing to live with, and how much you are willing to spend to go fast. Good Luck with what ever you decide to do!
Rex
1966 GT 350 Clone
289 (rebuilt with JE, Eagle, Arp)
Edleborck RPM Heads, RPM Air Gap intake,
Comp Cams hyd roller, Crane Golds,
Holley 650 DP, Hookers 1 5/8, Dual exhaust w/ X Pipe, T-10, 3:55's