Did any 1979 z28 come with a 411 rearend?

Yes, some 1979 Chevrolet Camaro Z28 models were available with a 4.11 rear-end gear ratio, but this option was typically part of a performance package or required specific engine configurations. The standard rear-end ratio for the Z28 was usually 3.42 or 3.73, so the 4.11 was less common and often sought after by enthusiasts for improved acceleration. Always check the specific vehicle documentation or codes for confirmation, as configurations could vary.