Puretone , was told our blocks are plenty strong

So as the crankshaft.
But to balance and knife edge . I just remembered i have a Ferrari video showing them making an engine and shows it really well.
See if the bottom end is all forged , trimetallic bearings ACL why lower the compression, more boost , but thats not what im after.
Why not have 11:1 and only 13 psi
Also if we only talk about rods given all Hbeam the price can varry as much as $1,000.
Yes the eagles are at the bottom end , made in china, but why the difference , marketing or really there is a difference
Also some builders say to rebore the new block to 86.5
and get appropriate pistons , why , does it really beed to be done ?
Thats why im asking so many questions