STM 4G63 Evo/DSM Timing Belt Tensioner Tool (TBTT) Nitrous Gauge found the solution

found the solution

2017-2020 Toyota 86/ GT86

The floor board option for the OEM CD changer (MN185222) is discontinued and no longer available through Mitsubishi

Expect a wait time of 3-4 months

STM 4G63 Evo/DSM Timing Belt Tensioner Tool (TBTT) Nitrous Gauge found the solutionSTM 4G63 timing belt tensioner tool is made in the USA from 4140 steel with a black zinc finish and laser engraved STM logo. This tool is great to have when swapping cams or cam gears as it allows you to hold tension on the timing arm from an easily accessible place while releasing the timing belt. It also allows you to apply pressure to the tensioner arm to put the grenade pin back into the hydraulic tensioner while still installed in the vehicle.