I know you guys want these cars to be race cars, but they are not. I mean I have had real race cars with posi and such and it takes some skill to drive them. The back wheels are spinning like mad with over 500 hp and a locker in the a$$. We are talking about BMW's that are luxury cars aren't we? Not a seat with a gauge cluster, a 500+ ci motor and a tubbed rear end to hold all the tire.
LSD. LOL I had one on my Jeep for off roading. They do work pretty well.
This car I built had quite a bit of HP and some really skinny tires. Talk about breaking the tires loose. From a rolling start it went pretty good though.
http://www.corvetteforum.net/classics/curtis/