bumper from tj to xj

I been looking around for bumpers and the tjs bumpers seems to be more cheaper than the xjs i just wondering if you can fit a tj bumper in a xj

the front bumper on the TJ basically uses the very front crossmember of the frame.

so theoretically you could build a bumper for the XJ that would have a crossmember in the front and then you could mount any TJ bumper you want. but make sure you re-enforce the new XJ "bumper/crossmember" properly.