How will i tell if the dealer really replaced my engine or not?

ZYUL8R

Personally i think they scammed nissan for a VQ37hr to keep in thier stock to sell to someone at the 9k price tag somewhere down the line.

i thought there was an engine stamp somewhere like the old Zs so i could tell if its the original engine still in my car or not.

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Old enough to know, but too young to care.