VIN Format: 1970-1980 Mopar truck

Decoding: M40CA7TO12775

Digit	Usage	VIN	Decoded
1-2	Model Code	M4	Unknown!
3	Body	0	Motorhome Chassis
4	Gross Vehicle Weight	C	6,000 - 11,500 lbs
5	Engine	A	V8 440
6	Year	7	1977
7	Plant	T	Warren MI Truck #2 (Heavy Duty)
8-13	Sequential Serial #	O12775	O12775

Serial numbers are sequential per plant