Body setting in its location to rough in the seating position, steering column and assessing what i will do for mounts and floor structure. had my Dad (83) sit cause we are about the same size.
Made seat tabs and risers, seats are the narrowest I could find out of a KIA Rio, removed the arm rests, lumbar handles and the base tilt option, modified the tracks for mounting.

There are so many small modifications and changes that must get addressed, in the overall build they are never even considered when all said and done.