A simple parts-swap job. After cleaning off the smokestacks form a junker G1 Prime and touching up the silver. After some sanding and clipping, the smokestack pegs fit perfectly into the screwholes, which just so happen to be right next to the holes drilled out for the animated Smokestacks to fit into. Boom, Instant Longstacks Animated Prime EDIT: Sorry about the blurry pictures. My -GOOD- camera was just destroyed this morning.