That is very nice, and welcome to the forum.
The headbadge puts it before '83, the font on the DT puts it before '86
The components and wheels, in my opinion, pegs it an '82 and the serial number supports that.
Just an educated guess.

It was a very close sister bike to the Shogun Chro-Mo 400 with almost identical frame and components.
Very much a butt-kicker to dozens of other bikes in the same price range.