First question do 160mm IS to post mount exist I’d like to use shimano brakes I have revelation dual airs and a chameleon frame, I’m getting a little goggled looking at all the combinations.

Second question is there a difference between the hope floating saw rotor and normal round rotor?

Yes, and no difference, apart from the pattern at the edge of the rotor.

The code for the mount will be something like SMMA-F160 (or sommat)

thanks nickc I’ll go have a root around on the ultimate pursuits website