Sergey,
To go from SE to SVT brakes, you actually don't need new calipers - you need the caliper
brackets. The SVT calipers after the eraly 98 E0's are actually the same as the caliper they used on the lower models Contours as far back as 1995, just with a bracket that moves the caliper further out to clear the bigger rotors.
To get these brackets you have to order them from a Ford dealer, as I do not not anyone who sells them separate.
Just ask for caliper brackets for a 2000 SVT and you will be set.
Then all you will need is new pads and the bigger SVT rotors, which I can help you with!