Update it did help. The car was not 60footin but would run the same. Best pass before the spacer was 11.15 @ 121.72 After 11.08 at 122.72. Then we got the car to 60 foot and the best pass was 10.97 @ 123.39 still not the best 60ft ever but the best of the day. So the last pass had a bad 60ft but went 11.05 @ 124.52 for the best mph ever. I'll have to do a bit more testin next year.