Jack of too many trades..
Looks like a Biesemeyer clone. I put a Jet Xacta fence (Biesemeyer clone) on my Unisaw. I just had the fence and no rails or tube.
I went to a steel supplier and bought a 3/16" wall 2" x 3" tube, and some angle iron. I wanted 1/8" wall, but they didn't have it. The orig. is more like 1/16" wall.
The tube works great. The fence doesn't raise up as much, when using stock feeder or feather boards to hold the stock down.
Extra weight can only help things also. Not to mention I use it as an anvil at times!
I think the steel ran me about $65.
I did *exactly* the same thing. 1/8 wall 2x3 and 3/16 3" even-angle. 5ft of each, plus 5ft of 3/4 aluminum stock (for the setup spacing) was under $60.00 from the local metal yard.
I got a fence from http://vsctools.com/ and an aluminum extrusion from 80/20 inc. I am pretty happy with the setup for under $300 total.
and I'm already looking to upgrade to a Unisaw.