Got a little more done and made a few more laps around the yard. I'm going to have to lock out 3rd gear when my son drives it's a little too fast.
extended the pedal for the brake linkage

welded the tab for the return srping

made a belt guide out of a training wheel and piece of bed frame


finished the brake linkage

this is what the throttle and kill switch will be mounted to

the contraption so far