A C7A1 would be the right rifle for 2002, but you'd have to put the Elcan C79 optical sight on. For the newer A2, it's a full length rifle, but with the telescoping stock (very similar to the US), a C8 is an M4.
Also, for 2002 PPCLI, you have to add scrim to the helmets
As for vehicles, I have NEVER seen a photo of or heard about a Canadian LAV-3 with slat, there's an add-on armour package, but that's belly armour and add on plates. Doesn't mean it ain't out there though...
Depending on what time in the war, you could use a few different Leopards, C2, C2 Mexas, 2A5.
The G-Wagens are not used outside of KAF anymore from what I hear from guys coming home, if at all.
We also have our version of a Buffalo, but in 20mm or smaller, you won't notice the difference. The A2 version has bar armour
The stryker looking vehicle is the LAV3 RWS, the 25mm cannon and turret have been replaced with a CROWS like RWS system
for the best references possible, check Combat Camera - its the DND photo archive. Fantastic!