1972 GM 350 Block 3970014 Dipstick tube location

[TOYVET]

For the life of me I cannot find a hole on a 1972 Chevy 350 (Block # 3970014) for the engine oil dipstick tube.
Also is the dipstick tube for this engine one or two pieces ? Thanks

[COPO_Anders]

That´s a "mystery"-block according to Colvin. Does it still have a partial VIN on it ?

[TOYVET]

No vin remains on the pad....
Thanks