I've been scrawling through Transformers junkers on ebay, and one lot I bought included a headless and weaponless Power of the Primes Rampage.
With some minor tweaking, a Classics Onslaught head fit fine.
I used a Combiner Wars weapon for the tail.
I wanted to keep the overall red scheme so it'd fit in with Predaking but added some black highlights.
https://i.imgur.com/PEg1lst.jpg
https://i.imgur.com/4g6qXfw.jpg
https://i.imgur.com/M29jiR6.jpg
