I have no idea. I've probably only made 80 or so drag passes in my whole life. I don't frequent the dragstrip and I'm no expert.
Plus, I find speculating about timeslips to be an utter waste of time. If people want to know what their car runs, they should go run it.
Also, I only race my cars in full "street trim" so I have no personal experience to base the effects of significant weight reduction either. To me, it's kind of silly to guy a car just to squeeze out another tenth or so. That's what ricers do. I'm only interested in how my car performs in a normal environment. That's just my opinion of course. My silver car's race weight is 3680 lbs with no driver.
Paul.