Sorry, but I posted before I was done again. The car is a 53 Studebaker running in B/CFALT. The other reason I have always run the lead is I wanted to run aproximately 55% of my total weight on the rear tires, so with that big stump puller in the front, I needed it. My car weighs 4500 lbs with fuel and driver. Incedently, Lionel Pitts told me that to make the McDonald and Pitts Firebird handle above 250, They poured the frame full of lead, and it now weighs 6500 lbs, and ran 297 at the World Finals .