sounds to me like its your rack then which is an expensive job at a garage as the subframe has to be dropped.

new ford items are dear (cant remember how much) so for me its a toss up between a recon rack from a motor factors (with a surcharge for your old rack), a used rack from a breakers or a used one from a private seller. i will probably get one from ASM as they are only down the road from me so easy enough to exchange if theres any problems. just need a bit of cash to do the job!