Shorty Headers for the street???
Don't know if they'll fit an A-body, but Summit lists a bunch of different 'block hugger' and 'shorty' headers to fit Mopar engines - both small block and 3rd-gen Hemi.
Suggest you get on www.summitracing.com and then do a search for both "Mopar block hugger" and "Mopar shorty" and take a look at the pics. You might find something that will work for your application.