What I discovered as I was compiling a list of all Spaceliner models during all the years of production is that there is an awful lot of incorrect information about them floating around on the internet, and most people don't know the correct year of their bike unless they're the original owner.
Now that I have finished my database of Spaceliner models and years, I can confirm that there is no such thing as a 1963 Spaceliner. They were built for Sears between 1964 and 1968, and the original style was updated for the final three years of the product run (the horizontal tank was eliminated and the cowling and light became more streamlined, among other changes). During any given year of production, there were between 20 and 30 different versions of the Spaceliner, each identified by a unique product number. Pretty crazy, huh?
In your post you said you thought the "rat trap" was missing. What were you referring to, as they never came with rat traps?