Update:
i came up with a basic idea of what i want the head to look like.
i had the idea of giving him a beard when i started him, i think it adds to him being a big old brute, as grumpy as ratchet, it also works with the fireman idea,
here is what i came up with,
hes not gonna have an autobot symbol on his head, i just wanted to try to make on in ms paint lol.