I have a theory on why the Shaker Hood went out of production, but I have no proof, just a theory. Why did only the Shaker Hood go out of production and not the Rallye Hood and the Flat Hood, this backs up part of my theory on why the Shaker Hood went out of production for a while. Also I have serial numbers of five Challengers that received a Shaker Hood in the times that the Shaker Hoods were not put on Challengers. This was in Dec. and in Feb. When I wrote this information down I never even knew that the Shaker Hoods went out of production.

& your theory is?

Build sequence

My SPD is also 203 so it looks like I'd be safe in finding a crush zone hood for mine.

As usual nothing ever makes sense with this E Body build over the first two years. Ola you have a Rallye Crush Zone Hood on your car, but when it comes to Cuda Shaker Hoods Chrysler used the NON Crush Zone Hoods well into the 1971 Production. I believe the Challenger Hoods were not changes to latter in the Year. It could also mean some got the crush zone hood in 1970 and Chrysler was using up the non crush zone stock for the Challenger. We would need many examples of Hood over each money the first two years of build to come up with some kind of pattern. I have also seen a April 1971 production date Hemi Cuda with a Shaker Hood and that car was said to be original paint and it had the NON crush zone Shaker Hood. Need lots and lots of people posting what their cars have for hoods.

That is one awesome looking Cuda Ola RED ON RED, wow.

Dont forget the "ba$tard" Challenger shaker hoods that were manufactured with a 70 top skin and the underside 71 style crush zones.
They may have been manufactured during the transition period over to the crush zones.
Most of them wound up at the Chrysler depots.
Hemicar1971 you should recall in 91 or 92 at Englishtown, Downer had 6 or 7 of these NOS hoods, and 2 of them went home with us.

Many years ago one 'theory' I heard on halting the 70 Challenger shaker hood production, and this is only speculation,... is that the underhood bracing broke loose, be it in accidents, or perhaps during crash tests.
That coupled with Ralph Nadar at the time crusading for saftey in the automobile industry, could have resulted in Chrysler rethinking their hood structure.

Agreed... Ola's red/red