Whp guesstimates..
You have slicks and skinnies on a 13.0 second, 311 rwhp car ?? Why would you give up your good handling for no reason??
Lid, LT's, catted y, stock catback and tuning .... I would guestimate around 340 to the wheels. Get rid of that stock catback and you'll be in the 350 range I would assume, with cats.
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