I started this project in 2008 and he is now finally almost complete {I have one part to do on his head and that is it.} Here are some pics:- [this is based off a junker G1 scorponok figure that had no accessories.] Hopefully I'll be able to finally finish him this weekend and then I'll post pics of all of his modes to show him off fully.
Nobody casts the original head (which is animé inaccurate and has off proportions anyway). So I had to make do with making my own. {That particular pic is a WIP shot. Its advanced a bit further since then.}
Very nice. If you still haven't got the head down, I would use an E Scorponok head with the helmet that you already made. That should do it, but in any event, very nice job on that.