I bought Fel-Pro intake gasket set for 1997 3.1 Lumina. Instruction in the box says to torque to OEM specs which is 115 in lbs. It seems like they put the wrong lower intake gasket in the box - the better one. Standard specs are for plastic gasket with red rubber around the ports and no crush sleeves. Mine is plastic with black rubber around the ports and metal crush sleeves. When I was buying I was unaware that there are different brands. Does anybode know what is the revised torque procedure for this gasket?