That could be. When you are talking about a stripped out rally car and a guy who's job is to race it, he could probably notice that diff.
My point is people make such a huge deal out of weight in cars with stereos, full interiors, hoods, 18s....and so on. Yeah, 100 lbs is technically worth .1 in the quarter mile. But for 99% of people, does 20/30/50 lbs of anything make any difference? I don't hear people saying they don't fill up their gas tanks fuller than 1/4 full to save weight! Gasoline weights 6 lbs per gallon, but no one says anything about that extra 70 lbs that you are carrying around with you.
If 35 lbs is a big deal to someone, I wanna see em without a spare, no hood, stripped interior, race bladder.......