U-da-Man Demoni - I appreciate the info and I appreciate your cautionary note.
The example shown is exactly what I was thinking - the bracket offsets the peg assembly about 25mm in the SS9 example which may be enough given the stock offset is 10mm between the two Evas so it looks plausible to hit 35mm in an effort to gain leg relief and allow my butt to nestle better in the seat.
The only remaining info needed is the span between the two frame mounting bolts - center to center dimension desired, both sides. The images are sufficient to transform the bracket geometry otherwise.
Thanks!