I know it would be ridiculously easy to kitbash connectors for these G1 missle launchers... there's even a ready-made peg-hole on Alt Wheeljack's shoulders... but I was just impressed that these snap on so easily without making any modifications at all. They actually "slide" on, rather than clip on. You just have to place the groove on the front of the launcher on the outer rim of the windshield curve, and slide it inwards. They tighten up as the windshield edge gets thicker. Presto... G1 launchers for Wheeljack!