R-Body ?’s

Know this is b-body section, however r’s are stretched b’s.Want to put 440 in a r-body and was looking for some help. Has anyone done one or know of one ? Will a bb k frame from a B-body bolt in ? Looking also for factory part #’s for those cars to see what was same/different. thanks

Know this is b-body section, however r's are stretched b's.Want to put 440 in a r-body and was looking for some help. Has anyone done one or know of one ? Will a bb k frame from a B-body bolt in ? Looking also for factory part #'s for those cars to see what was same/different. thanks