The GT 350 weighs in at around 2700 lbs. It handles great. I feel it is underated at 290 horse power it runs as hard if not harder then Ram Air III Judges I have owned. A quick calculation puts a GT 350 at around 9.3 lbs per 1 hp. In comparison to RA IV Judge at around 3700 pounds at around 10 lbs per 1 hp. Please do not think that I am saying a Shelby is faster than a IV because not many Shelby's had more then 3.25 gears and IV cars IMO are underated as well.
The GT 500's were more of a brute muscle car as the GT 350's were the Trans Am racing series cars, I have always liked the GT 350's because of their racing heritage, that's not to say I would pass on a nice GT 500. Man, there is not much room to change the spark plugs on a Gt 350, just imagine a 428 wedged between the aprons. All Shelby's have many specific parts that are not found on other Mustangs. Even the leaf springs on Gt 350's and 500's are Shelby specific.
Thanks for the compliments everyone
Bob, you are always welcome to a test drive
