Hi Jon,

I don't think you can get a COMPLETE system. You will most probably be able to get the ball screws, steppers and ali mounting plates in a basic pack, but that is only a tiny part of a conversion.

I am just about to start the conversion of a Sieg Super X2, and even though a totally different machine, conversion costs will be roughly the same.
I never start a job until I have EVERY little bit in position, I just won't stop once started.
Including an el cheapo second hand computer and a 15" bombproof touch screen (£114 for everything) off our favourite bidding site, the rough costs up until now have been somewhere between £850 -£900, but that does include a trailing Mach 3 control handset, and a new 4" fourth axis rotary table, which requires it's own conversion.

If I had gone for a commercial unit, by looking at ones supplied from the US, I would have ended up with lower standard ball screws and a compromised movement system for the Z axis, easy to fit but crap for moving the head up and down.

By doing it the way I will be, not only will I be getting a more rigid, better made and a more accurate system, it will also be of better quality and a lot cheaper, purely because I took the time to shop around.

Just to give an example, the whole control box for 4 axis with a USB breakout board and 4 stepper controllers has cost about £230 if I include all the smaller items such as cooling fans, plugs and sockets, crimps and smaller 12 volt power supplies as well.

It isn't the normal bits that cost the most money, but the ancilliaries you don't usually think about until you are half way through the job.

Take your time and plan well.

John