Welcome to the forum Sam & Babs!
You're correct, the '29' in the model # is the interior box length. I checked the specs page
for the 2002 (& newer) Hornet models, and... oddly enough there's no 29G model listed.
http://www.keystone-hornet.com/index...pecs&year=2002
I think the 'G' stands for "Goofed", as in Keystone GOOFED!
All kidding aside -- I did
find 5 of the same year/model, online for sale...
http://www.carolinarv.com/pre_owned_...sp?veh=2309907
Given the fact that it's a rear living floorplan, and 2002 was the first year of production
for the Hornet, I'm thinking maybe they simply used a different model # in the future. The
floorplans aren't archived to compare, but 'RL' is now commonly used for rear living floorplans.
Sorry we couldn't find a specific answer for you.
Terri, the Chevy co-pilot & DH Kevin