i need to find a steel chassis for my vibrochamp project

hi guys. i'm trying to build a fender tweed champ with blackface vibrato.
i need to find a metal chassis like the original, but something like 5 cm longer.
something like a steel chassis  25 x 10 x 7 cm.

i found a 25 x 15 x 5 box but it's not so good..

any advice?

thanks guys

Champ is cool, particularly because it's so simple.
I just built one, butchered some epiphone amp ($30 from pawnshop), psu is from some old equipment.
Epiphone output tranny I got from someone here...
So all in all it's under $50 plus a few parts from the drawer.
Lovely tone and vibrato is awesome.
I also removed the tone stack and installed a 8 ohm pot on the speaker to reduce volume for bedroom surfing...  ;D
So the simplest way to build an enclosure is to use a existing one...

H:67mm W:223mm D:105mm won't do I suppose?
http://www.tubeampdoctor.com/product_info.php?cPath=96_97&products_id=844

yeah, i saw that one, but i wanna add 2 pots and a tube (a tremolo mod) so there's no space..