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150 sounds kinda extreme, I was thinking around 120
Owners manual states for the 14mm lugs, 150 ft lbs, and that is on aluminum wheels. It certainly isn't going to hurt them. Your 97 has 12mm lugs, which use 100 ft lbs.
150 is the correct torque for OEM or aftermarket wheels on the 04+ trucks. I work at firestone, and have put a few after wheels on the new trucks along with my own, and 150 will not hurt anything