This part number is specced for a later model TJ with auto trans. However, I have been using the same radiator, but for the manual trans, 7652, in my 2000 Sport manual. Perfect fit and function. The 7653 differs only by having the tranny cooler in the lower radiator chamber. So, I ordered a 7653 from wermopar and verified with them by phone that it will also work in my 2000, just have to blok off the tranny cooler ports. Fellow said they just got some of these in today and mine has already been shipped.
I post this since all the 'auto fit' bots on Amazon, ebay and the mopar parts houses say neither the 7652 nor the7653 will work with a 2000.