better ? as in how ?
if you think better is a slightly faster turn rate , and a presumed better feel back through the steering wheel , cant see how as all the bushes will be the same, and even Jaguar advised to fit ' sports ' bushes to existing racks if refurbishing ,
so , better , if you want that sort of thing
extra work and expense are a definite, especially if your existing rack is fine ,
and ensure that ebay rack is a genuine ' sports ' version before you buy it , and it will need a full refurb before installing in the car, as you dont know what kind of nasties are in there from being stored.......
but, it is a straight swap over component wise, you will need a full fluid change, and a full 4 wheel alignment from a proper workshop after ,
BB