Imafia trick: quests

Here are somme quests that are unlocked
. at L60 or 65 (don't remember):
art heist: 70 000 000-110 000 000
exp : 60 energy:50 mafia size: 55
night vision:15 -night vision: cost 20 000; upkeep: 1000; attack: 10; defense: 1
helicopter: 5 -helicopter: cost 100 000 000; upkeep: 500 000; attack: 20; defense: 0

. at L70
rival recon: 120 000 000-200 000 000
exp : 73 energy:60 mafia size: 80
plain vain: 6 -plain vain: cost 125 000 000; upkeep: 1 000 000; attack: 8;defense: 8