You're missing a digit.
244 = 240 with 4 doors
4 = B21,
A = 1980 model year
1 = production plant, Torslanda Sweden
583166 = chassis number (1980 range: 482585-592109)
Look on the windshield pillar, in North America there's a plate with a
code that starts with "VC" that has an extra digit that includes the
engine type, eg B21A instead of just B21.
--
Mike F.
Thornhill (near Toronto), Ont.
Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)