Here's what I used (all from BAT):
SVT Rear Mount (#K433C) = 43.80
Front 98+ Mount (#K433A) = 40.50
HD Mount Inserts (#K433B) = 18.50
BAT delivered the parts quickly and charged actual shipping costs. No complaints...
If you've already got a 98+ Duratec, I don't think you'd need to purchase a new front mount -- just drop in the inserts and that'll really firm things up. These inserts won't work on a 95-97 front mount without modifications (i.e. trimming the inserts to fit the smaller-diameter mount).