Great project and kudos on getting the CDS trailer(s)!
You've only listed one SDDS trailer. I assume this is the triangle one? There are three others - searching for SDDS on youtube will get you results. Though if you want better quality I strongly suspect you're looking at telecine unless they exist in a digital format... For lack of a better description they're underwater, jungle and volcano. They exist as full-length individual trailers and as an edited combination of all three (the combination trailer is called Quest).