Correction: There are 2" hitch receivers available. Not from Curt. Reese and Draw-Tite have them. Just needed to search further.
Curt makes a Class 3 2" hitch, lots of em on 4.4 Ravs here. Check out the Torkllift hitch in the link below, should be on the last page or two.:wink
CURT Manufacturing - CURT Class 3 Trailer Hitch #13149