Sweden developed an afterburner, the EBK56U for the Avon 119/120.
Redesignated J-34.B the a/c was 34085 It first flew on 6th May 1958, the flight trials finished on 6th June 1958.
Significant improvements in climb performance were revealed but the limited fuel capacity of what was basically an F.4 Hunter and problems of afterburner at altitude brought an end to this development.
Ciarain