On our ITC Rabbit we have a welded diff... on our previous ITB Audi coupe we were open, and then went with a Quaife... Now, I have been told with such a LOW hp (basically <100hp) that it could be set up without a LSD or welded, suspension wise and the car would actually be much faster. This by maintaining more speed through the all important turns because of less tire scrub. In fact the information came to me from a well known chassis setup engineer/driver that took a podium in NASA Nationals with a 140hp neon with open diff. Thoughts?