Yes, the engine vin and the car's vin need to match. The engine vin can be tough to read. Being that the 2 vins are almost identical, are you sure it's 115066 not 115366? A 3 could easily look like a 0. Also look for the block casting number by the #8 cylinder next to the firewall. It should be 481988...... There's also a date code cast by the distributor. Ex. D201. 1 = '71.
There is. I know there's a date code and a trans code. My trans code is "supposed" to be FO. I believe you need to match that code with PHS and what they say should be in your ride. I'm not very well versed on trannies. There's probably more info that someone else can elaborate on....
Did you check the date code by the distributor? They did make that 481988 block across a few years.... '71 - '73. They also made a YS with that casting number in '71/'72. In the one pic, the number above the YS(the engine unit number) should match the PHS along with the YS. Providing you have the PHS doc.
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