As for the topic of 3 on the tree. Dad bought a new F100 in 1968. It had a 6 cyl with a 3 on the tree. Grandpa had a 1964 Chevy Biscayne station wagon with what we thought was a 327 but ended up being a 283. It also had a 3 on the tree. It is still here but the engine and tranny are gone. That was his trapping vehicle after one of our Mexican migrant tomato pickers took his 1950's Dodge truck for a ride off the bridge. My brother had a 1978 F150 with a 302 and three on the tree. He destroyed the shifter and sawzalled a hole in the floor to install a Hurst shifter. The neighbor I used to work for some had a late 1970's Chevy pickup with a 3 on the tree. The funniest experience I remember though was with my buddy. He kept talking about his late 1970's Chevy pickup with a 3 speed on the floor that came from the factory that way. I had never heard of that. I jump in it one day and start chuckling. I said "Travis, this is a 4 speed not a 3 speed". He argues no it is a three speed. Well all he was looking at was the shifter which was marked L, 1, 2, 3, R. I explain it to him and he just says "I start in first, go to second, then to third so it is a three speed.". His logic was a bit off. At the time my Dad had a 1978 F150 4x4 6cyl, 4 speed and it was geared low enough you always started in second but it was still a 4 speed. That truck is still here.