Should title it 'SPACEBALLS 3: THE SEARCH FOR SPACEBALLS 2'
That's the funny thing about Spaceballs. Brooks got George Lucas' permission to parody Star Wars prior to filming under one condition - that no merchandise be produced from the movie. This is why Brooks thought it was funny to include all of the scenes of Yogurt trying to sell Spaceballs merchandise; none of it existed off of the set (not legitimately, anyway).Merchandising! Merchandising! Merchandising!
...They could always do a Spaceballs prequel lol.