Morryde did my install , its 3/16" front to back and side to side. I would get a install kit from performance trailer brakes so your not looking for any parts. you don't want to use much rubber lines they will take away some braking power and response time. just short rubber lines to the wheelsand the rest hard lines.
Mark & Melissa
2015 Redwood RL38 , Kodiak disk brakes , 17.5" tires , 8K Morryde IS