Great info by Stefano! However, I must point out that any of these parts can be put onto any 442 to create a W-30, and you'd never know it was a fake unless you have the original paperwork or broadcast sheet. That's one of the most positive things about PHS documentation for Pontiacs, it comes from a 3rd party straight from the archives, and there's no way to fake a car. Of course, re-bodies and other extremes can always be done, but that's a different topic.
With a W-30, you either get the broadcast sheet, locate the original paperwork, or take your chances. The difference in value today between a 70 442 and a 70 W-30 is night and day. Documentation, documentation, documentation...
Also, most 70 W-30 hardtops did not come with a rear spoiler, but over the years many owners (and Cutlass/W-30 clone makers) added one. The rear spoiler was NOT available on the convertible body (442 or W-30). That's probably the single biggest boo-boo I see at car shows on ragtop 442 W-30 clones.
All in all, the W-30 cars are one of the coolest Musclecars ever made. They are really starting to get into the upper stratosphere of Musclecar collectability, and some are trading at prices that were previously reserved for Hemi and Yenko cars. Just what the doctor ordered...
