Thanks. I was close to buying a 9" from Quick Performance. Close to the same price I paid. Considered a Turbo 400 for a long time but went with the overdrive. The stumbling block was the electronic control, but researched and found Jake's has a controller for $200, and I can swing that.
I think someone mentioned already, you could run a spool with your track center section and limited slip in the street one. That would be cool. For me, having an overdrive is more economical than buying two center sections.
Good luck with whatever you decide on.