Real DZ pad stamp?

[1967 4K]

Here’s the story,
Bill and I setting at the Somernite Cruise yesterday and a guy is really looking over Bill’s 69 Z. Starts asking questions about DZ 302 engines. Says his deceased step father had a DZ engine and other car parts in the basement for 25 plus years and his mom now wants it all gone. He showed us these pics I’m posting and kept talking to us for quite awhile.
Of course when he said DZ Bill and I eyes lit up. We got carb pics and vin pics which we can’t make out. I showed him where the distributor numbers were at and he took Bill’s email address and said he’d send more pics first of week. It has 186 heads with it not on the block. Got piston numbers and appears .30 over.
The X has Bill n I puzzled also, I’m like Lynn block cast looks like 818 but that’s not a good number according to Colvin. It’s probably 618.
I agree with you guy about block cast date not corresponding with assembly date on pad. Colvin explains the possible over lap you guys mentioned.
The engine is in Tennessee and pretty good drive for us but we’re going to try n get more info from him and see what happens. I ask if he’d sell all the stuff in a lot and he said yes.
Thanks for helping us out I appreciate it much. I’ll probably be back with some more pics n questions later this week.