Times really depend on the driver and how bad you want to beat on it. A good driver can get mid/high 12's out of a stock 03-04' snake. An average driver not power shifting can see low/mid 13's. As far as wheel hop goes, a good set of tires and some
suspension mods will do a lot to get rid of some of the wheel hop, but it will always rear it's ugly head. Damn IRS.
Springs, bushings, struts, sub-frames will all help. Don't forget about the IRS brace, a must mod for these.