I'm new to the forum and am changing out the plugs on the TPI L98 engine in my '67 C-10. Planned to unbolt the exhaust headers to make more room. Does anyone have the torque specs for the exhaust header bolts? Closest I could find was 20 ft lbs from a Corvette forum, but not sure if they apply to mine as I don't really know what vehicle my engine came out of. Appreciate any help!