ET difference from 3.91s to 3.54s

Walker434 said

Yeah I really need to weigh it in its current state. No carpet saved me 35 lbs? But roll bar added ??? And I've seen lots of different opinions on weight difference between the 8 3/4 and the Dana 60.

The reason for the roll bar and Dana is that I'm putting on a Procharger in a few weeks to shoot for mid 10'secind 1/4 mile times

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In the past i have swapped from an 8.75 rear to a Dana( both had same gears) on consecutive weekends with same air and saw zero difference on my ET slip, despite the 50-60 pounds weight difference. The Dana is more efficient.
Regards the roll bar, i think its extremely beneficial to add the two angled bars that go from the main hoop, though the rear seat footwells and tie into( weld to) the frame connectors. It really improves chassis rigidity and makes the car more “one piece” doing that can really help with 60 foots a good bit. Those two points make it an 8 point. I just did that on my new car. Wouldnt have not added those bars.