the timing covers are basically the same- but the dip stick tubes are typically different, the 69 is unique only to the 69 B302.
The 70 dip stick tube is longer, straighter, mounts on the left of alt bolt (as u face the motor-passenger side).
The 69 tube mounts near the thermostat housing, is shorter than the 70 and bracket mounts completely in different area to the head than the 70.
So to answer ur question- NO !
I do have a few 70 NOS dip stick tubes