See the block is cast iron and the head is alluminum.
They both have different stress levels.
The cast iron will never warp enough for your eyes to see.
THe alluminum will but you'll have no way of knowing how much till its machined.
I would also incorporate ARP hardware and HKS mhg.
Probably a stopper. But none of that matters if you don't have atleast the head machined.
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