Adjusted black nylon stock stick grip for left hand pilots stick with push to talk button on thumb side. Cut pilots stick down to allow full forward stick movement. Temporarily mounted pilots stick grip and push to talk button. Fabricated metal cover for hat switch hole on top of stick grip.Removed instrument panel and cut out for comm radio and transponder. Mounted side supports for radio and transponder. Drilled mounting holes in side supports for radio and transponder and secured radio and transponder racks. Then temporarily installed radio and transponder to test fit. Fit OK. Rearranged placement of intercom to provide a more balanced look to panel. Drilled out mounting for intercom in new location and mounted intercom to test fit. Fit OK. Finalized location of ELT remote head and cutout mounting hole for ELT remote head. Fit OK.