Help! 850TC Replica questions

[Rubino]

Hi, I did a replica in 1988, but back then the internet was not this good for information, this '61 suicide door 600 was done to be a 850TC as I was under the impression 1000TCR didn't come out till 1963/4ish?....Now is that the car has come back and I want to finish it but would like to do it nice to 1961,
Questions-
1. what year did the Abarth 850TC go from suicide door to normal?
2. what colour where the cars and colour stripes? (Grey/Red?)
3. what year did the front suspension go to coil-over double wishbone upgrade?
4. what year did they get the big gauge set?