You could check Wollf Gunsprings : https://www.gunsprings.com/COLT/SINGLE+ACTION+ARMY+-+COWBOY+ACTIONS/cID3/mID1/dID96
"Flat-Type Springs (Stock No. 32290-32292) fits: Colt SAA, EMF, Uberti, and most clones
Wire-Type Springs (Stock No. 32294-32296) fits: Colt, Uberti, an most clones"...