This is a setup i made to attach my unknown brand D90 body to the MST CFX chassis. ( i belive it to be an ebay special i bought second hand). it allows me to use a large battery (138.5 x 46.1 x 25.6mm) that lays under the interior and the chassis. no straps are needed to hold battery as no room for it to get out. the front mounts can also hold the esc and receiver if using that option. most parts printed with 0.2mm nozzle at 1.5mm layer height with 3 to 4 wall thickness.