My dad and I are similar builds, both tall and lanky, I am 6'2, he is officially 6' 3", but probably stands around 6' 1", we both weigh around 160, I am not sure how close our shoulders and hips are in measurements, but I can find out if necessary. My dad would also like to be able to return the car to stock conditions and would like it close to stock conditions (i.e. no bolt on engine upgrades but we have discussed seats and belts but neither of us know very much about them.) I like to be held in the seat very tight, and to not slide around at all, while my dad likes to be held a little looser, if not completely loose. The car is mostly for fun and will be driven sportily and used for me to touch up my manual shifting and heel- technique. There is a very good chance we will take it to autocrosses, and there is a slight chance for a track day here and there.