Maybe I have this wrong, but Ithought the Mules were pretty much an exact copy of a 59 PAF.
I cant remember if its the PG Blues or the Stormy Mondey - but one of those is a 57 PAF.
If you want the 59 soundn then the Mules would be my choice.
"The Mule humbuckers are built and voiced as faithful reproductions of the best sounding late '59 PAFs "
"The Stormy Monday faithfully reproduces the tones of the brighter '57 & '58 era PAFs with smooth natural sustain, wonderful pick dynamics and string separation."
"Individually, the [PG Blues] bridge humbucker is pure '59 PAF in tone with all the touch sensitive response you would expect from unpotted coils."