So I bought the Movie Trilogy Prime today with the hopes that the trailer would work with Deluxe TFP Prime, and it does! Mostly. So I thought it might be fun to show what the trailer looks like with the other Prime Primes. The peg fits just fine into all of their hitch holes. Here it is out of the box. With Deluxe TFP Prime. Doesn't sit quite level but looks good enough for me. With RiD Prime. A little small, but not too horribly out of scale. With FE TFP Prime. Definitely too small, but he can still pull it. Clifftimus Prime? Peg fits the hole in his roof. Hey, why not?