looking for MK1 spiitfire plans

Hi all, my next project is going to be a MK1 Super Marine Spitfire, I'm hoping to use RC model plans and strip build it similar to a strip built kayak. Unfortunately I've only been able to track down one model on the net and it has a nearly 1m wing span which is far too big as I want to set up a dog fight in my lounge with the spitfire and a Messerschmitt 109 (Hang them from the ceiling)
Does anyone know where I could find a free plan? or would it be easier to scale them down? (I wouldn't have a clue where to begin) I reckon a 500mm wingspan would be about right.
Cheers, any help would be much appreciated.

Are either of these any help??

Cheers mate, the second one I've already downloaded. The Missus said she could scale it on the PC and print it out, so that's what I'll prolly do.
Cheers
Carlos

I've got a MK XV1 in .dwg format, if that is of any use.

A few more Spitfires here: The-Blueprints.com - Search results for `supermarine spitfire`

Not model plans as such, but blueprints and vector drawings, including some MKI, MKIa and MKIb.
I haven't checked through them all myself, just looked at a couple, but they're probably worth a quick look, for research if nothing else.