You need to check the
cheat code section (private group) i have just added portland garage mod where you can select any vehicle, ive also done infinite health, money, never wanted, max wanted level, infinite ammo all weapons, another user has added infinite armor, no car damage.
its worth checking as i am still working on the game to find more cheat codes.
Here are the cheat codes ive made so far
Grand Theft Auto III - The Definitive Edition
TID: 0100C3C012718000
BID: 7263A54A1E58DD45
VER. 1.0.2
o Infinite Health (Press L3 & R3 To Kill)
o Infinite/Max Money
o No Wanted Stars
o Max Wanted Stars
o All Weapons At Portland Hideout
o Infinite Pistol Ammo
o Infinite Uzi Ammo
o Infinite AK47 Ammo
o Infinite M16 Ammo
o Infinite Shotgun Ammo
o Infinite Sniper Rifle Ammo
o Infinite Rocket Launcher Ammo
o Infinite Molotov Cocktails
o Infinite Grenades
= PORTLAND GARAGE MOD =
o Landstalker
o Idaho]
o Stinger]
o Linerunner
o Perennial
o Sentinel
o Patriot
o Fire Truck
o Trashmaster
o Stretch
o Manana
o Infernus
o Blista
o Pony
o Mule
o Cheetah
o Ambulance
o FBI Car
o Moonbeam
o Esperanto
o Taxi
o Kuruma
o Bobcat]
o Mr. Whoopee
o BF Injection
o Manana Corpse
o Police Car
o Enforcer
o Securicar
o Banshee
o Bus
o Rhino
o Barracks OL
o Coach
o Cabbie
o Stallion
o Rumpo
o RC Bandit
o BellyUp
o Mr. Wongs
o Mafia Sentinel
o Yardie Lobo]
o Yakuza Stinger
o Diabloe Stallion
o Cartel Cruiser
o Hoods Rumpo XL
o Panlantic]
o Flatbed
o Yankee
o Borgnine Taxi
o Toyz Van
E should work with the switch version with layerdfs not all tho but this person did a overlay for the trilogy on the switch:
