no..... and yes.
You could mount the rear rack on a 1g subframe in the same fashion as ours, you would just have to replicate the mounting attachments, at an .00 incremental level.This is assuming you have all the 4WS stuff..... and just no subframe.
That is why the part numbers are different,I doubt anyone has done that,and if done right there is no reason it wouldn't work.