911 motor id help please thanks

[laszlo805]

I just picked up this 911 Porsche motor from a friend i tried to look up the id#
it is #907723 there is a star at the begging of the number and at the end of the numbers any help would be great

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1966 911 engine series 901/05

[laszlo805]

[jt912]

For a frame of reference, my March 25th built 911 has a motor number 907166.