the numbers that I can read state

Holden HJ Panelvan 04/75
BHJ- 20473A
GVW- 2200kg
Model- HJ8WM70
Body No- 148707-A
Trim- 1888-19V
Paint- 568-15951
Engine- T 32 (Ithink thats what is says hard to make out)
Trans- M20
RRAXLE- GU4
General Motors Holden PTY LTD 8M70REL307311J

--- Updated ---

unsure I cant make it out either