Fordged 318-3 truck crank or Poly crank, need help ID

Scored this,

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Had done a little research and saw some places said the Poly 318 crank would swap into an LA and that it had an 8 bolt flange,

Other places said that an 8 bolt was on the 318-3 truck crank, then others said there was never an 8 bolt smallblock crank.

I got 145 into it, did I get something usefull or a turd?

Its been so long since I looked at a smallblock crank that I really couldnt tell, but it looks correct to me. For 100 and 45 shipping I though it was an OK deal if its what its supposed to be.

Thanks for looking.