A while back Austin posted that he picked up an AFX Data Race Control Center. It brought back memories since I had one when I was a kid. After his post I was lucky enough to find someone on eBay with 2 listed with a 99 cent starting bid. I bid $10 thinking I had no shot, but won them for $5! So today I set it up & it works like a champ! The sound tower even makes the strange moaning car noise synched with the amount of throttle you apply.
Here is what it looks like set up:

I still don't know what my final track will look like but this is what I set up today:


It is made up of Lifelike, Auto World, AFX, & Tomy track with Tyco controllers.
Thanks to Wayne for some of the pieces of Tomy track that I used!
Greg