VIN on a 1970 verifies 442 status but not W-30 status.
3 - Olds Division
4 - 344=442
4
8 - 87=Holiday Coupe
7
0 - 1970
M - Lansing Michigan (Only plant for W-30s)
1 - Vin sequence for all Cutlass (W-30 production believed to have started in October).
6
6
0
0
7