We have a nice used AP Racing brake caliper available for sale. It has 1.88" / 1.75" pistons and fits 1.25" rotors.
Please note: The bleeder screws and crossover tube are currently installed on the wrong ends, so they should be swapped for the caliper to be used in it's correct orientation. It looks to be in good used condition otherwise.
Please see the photos and decide if it's right for you.
Lightweight, two-piece forged aluminum alloy body.
Stainless steel pistons.
High temperature, low drag seals.
Integral bleed screw and pipe protection.
Stainless Steel wear plate & pad abutments.