They are the same levels as the previous Elite 4, well i am currently just about to enter Mt Silver (After winning the 8 Kanto Badges) and so far the Elite 4 have the same leveled Pokemon.
The one you battled before Kanto, The Elite Four of SoulSilver and HeartGold are shared between Kanto and Johto even though it is located in Kanto. But once you beat Red the Elite Fours teams are updated so technically those are the elite four.
No there's only one elite four.
well, there isn't any, just the eight gym leaders
Defeat the Elite four and catch the boat from Olivine to Vermillion
Beat the elite four. Professor Elm, I think, someone, will give you the boat pass for the harbor in Olivine, which will take you to Kanto
You must beat the Elite Four. Then take the ship in Olivine City which will take you to Vermillion City
i am pretty sure you can in the kanto region in soul silver after you defeat the elite 4
After you beat the 8 Kanto Gyms, if you return to the indigo plateau you go through the same elite 4 and champion, but their levels are now between 60s and 70s and they have different pokemon, some from sinnoh and hoenn as well.
Once you've beten the jhoto and kanto gyms and elite four you will have the option to face red {the character in blue and red} When you beet him prof oak will reward you with 1 kanto starter.
you start out in the johto region if you mean kanto you have to beat all the gym leaders and the elite 4
You go to the Cerulean Cave after beating all eight Kanto gym leaders.
Once you beat the elite four and the champion professor elm will give you a s.s. ticket to get to the kanto region