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The 10.5 to 1 will run with 92 octane and alu. heads.

There are two factors when picking a port volume or looking at flow numbers.
Cubic inches and rpm's.
I am sure you have heard an engine is an "air pump".
You can only use so much fuel and air.
To...

That depends on if it is a cast or steel crank and how new everthing is.
A fully preped 5.7 rod with ARP bolts will handle 6,000 rpm's.
But for how long? That is the question.

Heads are way to big un-less you are going to spin it to 9,000 rpm's.