Some of the Salsa front racks were recalled a year or two ago, so beware.

Since you have a SDT, you could try to fit a std cheap AL rear rack to the front, using the SDT's fork crown bosses and forward dropout eyelets for mounting. You'd have to bend each rack leg inwards 10-15mm to fit the narrower spacing on the front (100mm vs 130-135mm). Also, the fork crown spacing may be wider than the usual seatstay mounting, which makes me think you ought to look for a rack with the flat steel stays that you bend to fit, versus the round Al rod style.