Just wanted to update all on the header extensions. Last year around this time I went a new best with my much lighter 8.75 rear end @ 6.51 at 104.8 miles per hour. After that pass I installed a new Strange Dana 60 and the car couldn't get out of the 60s 6.62 6.63 and so on. Well I installed 18" header extensions last week and went to the track today. Right off the trailer the car went 6.50 @105.26 and backed it up with a 51 and a 52. same MPH. The car went 1.41 60' time where it was high 1.40s last year. All I can say is that was the best 100.00 I have spent in a long time to buy those header extensions. 6.40s here I come.