I use the Xport Flatbed 2 bike hitch rack from Performance Bicycle. It's mad for them by Hollywood. The Hollywood version is the Sportrider. You can buy the LWB arms for it and replace the ones you have. Two people should replace the arms, or one can do it if he/she has three hands. You can also do it by yourself if you are exceptionally good at cussing. I didn't like the plastic 2" to 1 1/4" adapter, so I put on a 2" to 1 1/4" adapter from U-Haul.
I drilled the end of one hoop today and bolted a fork mount on it. This took a little over 10" off the length of the mounted bike. I positioned the left hoop so it's even with my driver's mirror, and the bike sticks out about 8-10" on the right side. I drive a Jeep Wrangler.

http://www.performancebike.com/bikes...00_20000_36006

http://www.hollywoodracks.com/hitch-...hitch-rack.htm