Update on the converter Continental built me. It worked well with my 496. No complaints. I asked them at the time how it would work with a 582 pump gas engine around 850 HP in the future. He offered to me that it would change but he could build it for the 582 if I wanted and it would just be a little tight for the 496. I told him that's what I wanted. Now the 582 has been built and in the car this season. Works even better than I expected. At 3200# it is a solid 5 second 1/8 mile combo with 1.20s 60 foot. Kris at Continental made a durable, well performing converter for me.