I agree. TJ front flares on an XJ look like crap & totally out of place. I put TJ rear flares all round on my XJ and that's the balance you're looking for between the 2 models. Perfect fit after trimming ...When people started using front and rear TJ flares on the xj, i thought it was totally UGLY cuz the front flare does not match up with the xj's body lines at all. It's been two or three years now and i still think it's looks totally funny.
I would recommend using two rear sets of tj flares instead of the front flare. It looks like it's OEM plus gives you wider coverage: