Hello Paul,
Dug out the exhaust paper work here for you?..
Vetterman Tips for Installation says = Tighten the exhaust nuts to 100 to 140 inch pounds. Remember to re-check the torque on them during later inspections.
Vetterman Exhaust Systems Tips says = Check the torque on the exhaust stud nuts. It should be 100 to 140 inch lbs.
Phone Vetterman at 605-745-5932.
pk
Larry stated ...that 170 to 180 is correct.
The correct torque value for the exhaust studs is 180-200 inch lbs....
This is what is currently in the exhaust hanging instructions.