Our C and D Street Roadster weighs 3000 pounds wet with driver with absolutely no ballast. It's about 55% rear and 45% front. It's a steel-bodied Model A with a 1/4-inch boxed frame, mounted very low. The rear end is over the frame. It has an 18-gallon water tank in the rear. It's run 209+ on the salt and the tach is just as good as a speedometer. If it's slipping, we can't tell. We don't know the weight of the bare frame, but we sure can't pick it up. It gets deeper, and wider, towards the back to a maximum of about 5" width and 12" depth. The frame is segmented inside to allow us to add shot, but so far the air inside is sufficient. Al Simon built it. Last year we ran El Mirage for the first time with the C motor and went 189, just what the tach said. Later in the year we put the D motor in and only went 173 (with the wrong, C motor, gear). We hope to re-gear it for El Mirage later this year and do a little better, but that D record of the Barbees' is real stout! The car has had the same owner for over 40 years and is still licensed for the street and could someday return.