1970 Plymouth Hemi 'Cuda in orange, on display at the Walter P. Chrysler Museum. The blue-chip muscle car. Plymouth put the 426 Hemi, advertised at 425 horsepower and 490 lb-ft and widely believed to make more, into its E-body pony car. Only 666 Hemi 'Cudas were built for 1970, 652 coupes and just…