Stock they are SLOWWWWW, so please don't buy one thinking its going to be fast.
Not a bad platform though, especially if your going to throw an LS based built motor and some spray or turbo at it. If your going to build an lt1 though, be prepared to spend more money, get less, and ultimately an lt1 will leave you wanting. (or it would me anyway)
me likey LS 408 thrown in one mmmmmmmmmmmmmmm