The first W would be for Group 1 (but the 1 was typically not stamped for whatever reason).
Group 1 option W = tinted windshield.
2WP is Group 2, options W and P;
..........W = 2 speed auto trans
..........P = Radio, or maybe back up lamps. I seem to recall some controversy there.
5W is Group 5, option W which is the retractable seat belts.
K
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'63 LeMans Convertible
'63 Grand Prix
'65 GTO - original, unrestored, Dad was original owner, 5000 original mile Royal Pontiac factory racer
'74 Chevelle - original owner, 9.56 @ 139 mph best http://www.superchevy.com/features/s...hevy-chevelle/
My Pontiac Story: http://forums.maxperformanceinc.com/...d.php?t=560524
"Intro from an old Assembly Plant Guy":http://67-72chevytrucks.com/vboard/s...d.php?t=342926
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