Of you mean specks on a 35mm print those would be there is they did not handle the film very cleanly at the processing lab, or if the print itself was mishandled. This is one film where there won't be extra quality on a 35mm print that is not there on a 16mm print, same with graffiti if the prints are pristine and not faded.
Unlike star wars which was shot on much more expensive film equipment, film stock and on true 35mm anamorphic not a blowup like Techniscope.
Actually i cannot remember if they were both shot on techniscope or if one was shot on super16. Graffiti and THX i mean not star wars.