Let me know how it works out. I just verified that the price did include installation, and included installation and purchase of the hose kit. If you are already set up on the tractor hydraulics, or you are using a PTO pump like I am, then it should be less $$. (I just got a glance at the numbers, but I think the subframe alone was around $1100 or $1200. Not sure if that included installation.)
The service guy basically just looked up what they installed on mine, and checked the current price. Mine is a 2001 TC33D.
If my explanation in an earlier post of the changes I made to the pins which set the length of the stabilizer bars doesn't make sense to you, let me know, and I'll try to clarify.