agreed.
The rear doors will be the trickiest part, but i'm sure it can be done with a bit of thinking.
I'll keep an eye out, and if some alloy or steel guards turn up cheap enough, I'll give it a go.
I have seen a couple of pictures of 4 doors with extensions, and I think it might become more popular as 2 door projects get thinner on the ground.
It sounds like front guard arches are common (forrest v tarmac), and it's only how high the rears come up.