Are the TTI shorties really my only option?
Do you have some sort of drawing?
I have an AutoCAD drawing and a .dxf file, from which I was able to get a complete set cut on a plasma table. I used 14 gauge plate (I think) because that was the thinnest they would cut (thinner can spring up and damage the cutting head). I wanted 16 gauge, but couldn't get them to do it. I would suggest looking around your area for a water jet place and see what they would charge.
It really wasn't that bad to assemble either, despite the fact that I cut all the gaskets down so they don't show (only saving what is under the manifold/plate). Don't like the gasket showing. :) This included a Magnum gasket on the inside of the plate and an LA gasket on the outside.
I can get you some pictures tonight and post them tomorrow, if you would like. And I will dig up the files, too.