Doc,
When using a Dutra exhaust manifold should I adhere to the 10Lb's/ft spec?? thank you

Yes, it depends on the gasket, but I've done 5-7 lbs on a nicely mated set with Remflex(all flanges the same depth and true)... and have gone to 20 max on a remflex with a very horribly mated set (each manifold had a different flange depth)....25 is too much...

10 is a good number, especially with the composite gaskets that come in the rebuild kits...

Thank you! DI