upper boost limit for stock MC-1 internals?

[Gerard]

A few days ago I picked up a magazine called "Hot Rod" as it had a
feature on metalworking, but in it they also had a feature on
"performance V8 parts". In this one they were covering work on the
crankshaft. Things like replacing it with a forged instead of cast crank
from Crower, lightening the counterweights and the flywheel mount, tear
dropping the oil holes and all that stuff in order to reduce weight.
They then went on to using titanium conrods from Crower.

The question that came to mind is whether the MC uses a forged or cast
crank and what can be achieved using lightening methods on these cranks
or whether it is a waste of money when you're not looking at 600-1000HP
like these guys with the big ol' V8 machines.

I recall something about the Audi 200 quattro TransAm car running
titanium rods, but most of the rest of the internals were stock factory
bits and pieces.

How strong is the crank? As Yoda would say "get any stronger will you
not".

G.