*I HAVE NO IDEA IF THIS WILL WORK.*
I have renamed this card so that PCSX2 SHOULD read it as memory card slot 2 and wouldn't overlap any existing memory cards in slot 1. drop this file in your "memcards" folder for it to work.

[PCSX2] 100% All Trucks + All Champ Trucks unlocked

this PC save has the UbiSoft truck unlocked, navigate to your "MTruck" folder where the MTRUCK.exe is and drop this file there.

[PC] UbiSoft Truck unlocked

MagVII

Monster Jam: Maximum Destruction

GameCube

Sunburnt1

AmyComet

USA / NTSC

Easy

Normal

Hard

Extreme

Stadium Race

Canyon Race

Lava Island

Stadium Challenge

Arena Challenge

Airborne Ranger

Airborne Ranger (Champ)

American Guardian

American Guardian (Champ)

Avenger

Avenger (Champ)

Blacksmith

Blacksmith (Champ)

Bulldozer

Bulldozer (Champ)

Bustin' Loose

Bustin' Loose (Champ)

Destroyer

Destroyer (Champ)

El Toro Loco

El Toro Loco (Champ)

Eradicator

Eradicator (Champ)

Goldberg

Goldberg (Champ)

Grave Digger

Grave Digger (Champ)

Gunslinger

Gunslinger (Champ)

King Krunch

King Krunch (Champ)

Madusa

Madusa (Champ)

Mountaineer

Mountaineer (Champ)

Prowler

Prowler (Champ)

Reptoid

Reptoid (Champ)

Spider-man

Spider-man (Champ)

Blue Thunder

Blue Thunder (Champ)

Sting

Sting (Champ)

Sudden Impact

Sudden Impact (Champ)

Survivor

Survivor (Champ)

Thrasher

Thrasher (Champ)

Wild Thang

Wild Thang (Champ)

Wolverine

Wolverine (Champ)

Grave Digger (Classic)

Grave Digger (20th anniversary)

The Incredible Hulk

iP Inland

Big Yellow

Hooch Wagon

Dog Pound

Bull Dog

Armored Force

Paddy Wagon

Rayman

Chessmaster 9000(PC Exclusive)

High Voltage Software(PC Exclusive)

Stupid Invaders(PC Exclusive)

Tonic Trouble(PC Exclusive)

Ubisoft(PC Exclusive)

Console

Difficulty

mini-game

Truck Selected

Game version

Game Version

https://drive.google.com/file/d/13RcCITIFNc74WWba4mxTx6o2b71Pziyc/view?usp=drive_link

I put this one into a  .zip folder so maybe it'll work if it hasn't for you

Name	Manager
[PCSX2] 100% All Trucks + All Champ Trucks unlocked by MagVII	MagVII 3 years ago
[PC] UbiSoft Truck unlocked by MagVII	MagVII 3 years ago