Housing is R180. Internals are R180. Axles are R180 to R160 axles from a B-Spec lib. There are a number of ways you can do R180-R160 axles for around $500
I am currently doing a full writeup of the project. This will have all the details when released which will hopefully be in a week or two.
I found your facebook page. Good job!
Now that you've done one, assuming it works as intended, would you consider doing more and selling them or is it a once off? I'm sure there are heaps of people who don't have the skills (me includeed) to do this sort of thing.
From what I've gleaned, the part that I'd have no hope of doing currently is setting up for the Axle retention, even though I've got a dremel! That's a neat little jig you made, I just woudn't have the confidence. I do have a friend with a dinky little metal lathe, I'm guessing you dould do that on a lathe..
I'm pretty average at tapping things too!
But... if there was a 'buillt' locker available that just needed getting all the external bits together e.g axles, compresser, hosing, (fire extinguisher!) I reckon you'll be shipping these things world wide!
One thing I am wondering, is that would this be worth doing with a VCD instead of a DCCD. Or for that matter the old circa '94 4EAT I have sitting in my SVX.. (i've got the funny feeling that this 4EAT has some kind of VTD in it anyway but know bugger all about the subject)