FJ40 landcruiser rear disks brakes for semi-floati

I built my truck (FJ40) and put LN106 front disc-brakes on all four corners. They just bolt on the front with a 70 series ball joint (front set not for sale as still in use). I am now selling the rear set up (LN106 front disc brakes, caliper, disc and bracketry) to suit a semi-floating FJ40 diff because I have now gone to a full floating diff with diff lock and the rear LN106 set up is no longer required. The disc brakes work very well, the trick is with a remanufactured, vacuum assisted master-cylinder, remove the foot valve and discard, plumb the brakes without a proportioning valve to the rear. This proved to pass certification and amazes people how well it stops. Because it just bolts on, it is my understanding that you will not need to re-certify your truck, but suggest you check this out for yourself.