...had:
Sherman VC: 12
Sherman III: 40
Sherman IB 105mm:4
Stuart V: 3
Stuart Recce: 8
Humber AC: 5
Lynx AC: 5
Source: Jeff Plowman and malcolm Thomas, 4th NZ armoured Brigade in Italy
Reading the reference though, it becomes apparent that this level of equipment didn't remain constant throughout the Italian campaign, as new tanks (or recce vehicles and AC's) became available they were augmented or upgraded as numbers permitted.
Source