^^^And the Recon comes with both disc & (linear pull) canti bosses. Just attach your brake of choice.
Travel is set by way of spacers inside the shock. 100mm is default, but the internal spacers can be re-ordered/reconfigured on reassembly for 80, 100, or 120mm of travel as you see fit...At least that is what the shop service manual says. I have yet to rebuild mine, so I regarded that tid-bit as an intellectual curiosity more than anything. Someone with first hand knowledge can confirm?