Is this a matching number K0 atc 70

[oldoo]

Hey guys, chasing a matching numbers K0 atc 70.
Found one with frame number and engine number as following. It looks like the engine is from a K0 from the beginning engine number but not matching the frame from the second half of engine number.
Top number seen is frame number.
https://uploads.tapatalk-cdn.com/20190412/2d465776482cc730e4e6452da9313301.jpg


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[Joseph Farrow]

On the early 90's the frame and engine numbers did not match. I dont think until around 74 did they start corrosponding so it may be the same for a 73 70. Someone will chime in.

[gimmeamidget]

On all the early 70’s I have seen the numbers are close but not the same just like yours. I would bet the engine is original to that frame.

[barnett468]

I will look at my 69 z50 but the last to digits on my 81 CM70 and 200T engines are different than the last 2 on the vin.