This Kit will allow you  to mount Trailing arms on your Axial Capra cage.    Kit comes with a shock relocation mounts for the  front and rear as well as a custom flat belly 3 gear skid to  accommodate a  wider stance for trailing arms and the front links for more stability at high speed.   Also has a Battery relocation  plate to place the battery down  low  for improved CG.   Intended for straight  axle swaps but  no reason  It couldn't  be used with portals.    Some modification to the rear of the chassis is required and the Sway Bar and Trailing arms are not included.   Twin Hammers or similar length trailing arms of your choice are recommended and the ones used in the pics are found  here  https://www.integy.com/st_prod.html?p_prodid=40353&p_catid=405