There are at the Indigo Plateau in Kanto but 1st you have to go through the Victory Road and beat all 8 gyms and catch lugia in Johto.
you have to beat the elite 4 89 times
you can get to the honne region after you beat the elite 4 100 times
in a lab in pewter city(u gotta beat the elite 4 of johto)
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.
transfer it over from the GBA games only after you've beaten the elite 4
well, there isn't any, just the eight gym leaders
The gym leaders have different Pokemon the elite 4 and Lance.
After you beat the elite 4 again raikou starts roaming again.
beat elite four rematch
lance
battle the elite 4(with a cheat) and capture will's Pokemon only with cheat though:{ get action replay,or migrate a ralts
i am pretty sure you can in the kanto region in soul silver after you defeat the elite 4