68 340 engine WiW?

[w2360Duster]

I have a 68 340 (dated 6 -67) engine im gonna be puting up for sale, this engine has serial number stamped nor does it have any stampings below the left cylinder head. Its .030 with forged pistons. I believe the crank is 10/10 , X heads with hardened seats. Any idea's i can't post pics as of now cause im at work. Any thoughts?

 

[68cuda78]

Repalcement block

 

[DA4AD]

OR.............Someone ground them off!

 

[GTS Registry]

They started stamping the VIN on supposedly on late 68 blocks and all blocks for 1969. That is a 67 casting so it is a early 68 build 340.