My car has a PTC 9.5" converter in it. They make a REAL nice one that works for moderate power for about $475.

I run a 3.55 gear in a Dana, but my car went 10.60's before with only a 2.76 gear in it. You don't need a ton of gear.

Here is the vid...

https://www.youtube.com/watch?v=vqJoG_2wdMQ