How to mount a RTT to factory rack??

[kai38]

I have my RTT mounted on a M416 trailer, its a great set up but next month I'm doing a 1 week back roads trip through NM and I was looking over my camping gear which is carried in the trailer. Looks like I can get it all into the cruiser since I'm going solo on this trip and wont need to take as much with me so I was looking into mounting the RTT as cheap as possible to the OEM rack.
Will I need yakima cross bars and the Yakima part to mount the bars to the rack?
Any suggestions?
Thanks

[Layonnn]

take a look at "Corey"'s build up. He has a maggolia i believe mounted to the factory rack.

[judojon]

I bought the Mont Blanc 48" cross bars , mounted on my stock rack. Put an Expedition Series on using the hardware that came with it. Fit perfecly, went from Seattle to Utah and had no problems whatsoever. I paid 160.00 for the Mont Blanc setup