Dan, WELCOME!
The 105 IMO is a very good Cub Cadet. My favorite Cub Cadet is the 12 hp version from the same series, the 125. The hydraulic lift was an option, as were headlights and a rear lift. Chances are the steering will be loose and sloppy, fairly easy to fix. The hydrostatic control lever may be loose, it's held onto a splined shaft with a setscrew. The hydrostatic control trunion will likely be worn, click on this link to see the info in the FAQ on fixing it When you get to the Hydro Trunion FAQ link, be sure to follow the additional links at the bottom of the pages for more info. The drive shaft to engine coupler will most likely look like the one that Todd H. posted yesterday. Pretty much any <FONT COLOR="ff0000">I</FONT><FONT COLOR="000000">H</FONT> Cub Cadet is worth getting and fixing up.