I've got 7 vehicles but all different.
LC Torana original one owner.
LH Torana SL/R blown/nitrous (MR BAD)
LX Torana (was 4cyl, now 383 V8)
WB 4.2 Van
HJ 4.2 Ute
VG Valiant Safari Wagon original one owner
VT Clubsport hopefully a future collectable

and my Wife has a VT SS, so I guess it's 8 vehicles.....

I wish they were all vans sometimes. The bloke up the road has a HJ van in good condition that lives under a tarp, so I might make him an offer.