Hi just seeing if anyone knows I have a 96 xjr..but also have a complete car a 97 xjs 4.0 for spares.would the rads be the same thanks Steve

 

The XJR radiator is different from the x300 4.0 litre radiator, as the transmission oil cooler couplings are different due to the XJR having a different auto box. So unless both cars are manuals, I would surmise the answer is no.
if the XJs radiator is the same as the x300 radiator, it could be made to work with appropriate make to female coupling converters for the oil cooler.

 

I have a replacement radiator for the XJR6 - brand new, boxed, unused, never been on a car - if that's of interest to you?