in my 727 of all places.......changed out my tranzact valve body, for a Griner, from Keith Long at "727 Specialist".........No other changes to the car were made.......1/8th mile racing, i instantly picked up 2 tenths, 5 MPH, and .05 on my 60 foot........all from a valve body swap. with so many disappointments out there in the racing world, both products and people, it is really a pleasant surprise when i get something that unexpectedly worked so damn well.......so, a big thanks to Keith!