There are alot of good converter companies out here. I have used two different ones in my street/strip cars and they have both worked to 100% of my satisfaction. Turbo Action of cousre are top notch converters and the Luppo Dynamic Converter I use in my 63 now as its been in my 63 since June 2006 when I put it on the road. And we use a Dynamic converter in my sons Dart. The Dynamic converter works great in my 63 as it does just what I wanted which is drive around like a normal converter and at the track it launches good enough for me to pull a 1.50 sixty ft in my 3700 lb 10.70 street car on just SS springs. Yea I have been 100% happy with my Dynamic and Turbo Action converters. Ron