You use a masterball
Well, if I were you, I would go into a room with Suicune in it. (but the Suicune could be low level). I did this and I got one. I hope this helps.
Suicune does not evolve.
there isn't a wild suicune to catch in white or black
You can catch Torchic in the Lavaridge Town Gym in Pokemon Indigo.
Use a Master ball on Suicune but there is an easier way get Suicune. Catch a Pokemon who has the ability of spell tag.
No it didn't exist in Pokemon indigo.
yes
You cant
No
no
I have no idea but Pokemon Indigo is a fake so i doubt anybody will.
the starters have been released on the maps of pokemon indigo on this newest ver so you can catch them quite easily now