TPLSFUN wrote:Hi cmesurf,
Seems no one here in Madison,WI. wants to tackle it for me. Something about cutting the bumper in order to install or they say there is nothing available for my car. Thanks for checking back too....... I am going to continue the hunt though.

that's nuts, the hitch for 2010 convertible is lot simpler ... than 2009 (my convertible), practically plug and play.
The following parts fits your 2010 perfectly:
CURT Trailer Hitch #11068 (comes with good instructions)
wiring is plug and play: CURT T-Connector #56117 (comes with good instructions)-
The cut/trim of the bumper is behind the license plate about 6x1.5 inches, hides once the license plate is installed.
There should an authorized dealer for Curt Hitches in Madison, WI
FYI:
I found couple of Curt Hitch installers in Madison, WI:
Blain's Farm & Fleet - Madison
2202 S. Stoughton Rd.
Madison, WI 53716
608.221.3851
Distance: 4.61 Miles
Pioneer Rim & Wheel
1206 Fermite Drive
Madison, WI 53716
608.222.4545
Distance: 4.76 Miles