Am assuming (always dangerous on these forums) that your builder(s) have
the proper engineering for the "WHOLE PACKAGE" and to your specifications...
Also assuming you are not into that level of detail engineering and just
talking about the stuff/level you like...and nothing wrong with that and
repeat...like your pictures and am envious...wishing my project gets
started soon...
But...the details of engineering is what most are talking about and
too often taken out of context of the 'whole system'...
Like yes/no on the turbo...says to me...that the engine builder needs
to know before they start spending money, as yes/no changes lots of every
expensive stuff...not to mention the machining, assembly, etc of just
the engine itself, but the other components that are bolted to the
engine *AND* working with it
Simple stuff like the compression ratio changes with a yes/no and that
brings in lots of other components. Like the crank, rods, pistons to
the head work and a BIG ETC
Another is the simple comparison of an EcoBoost vs your build also has
tons of engineering needed as mention above.
A simple thing like intake manifold & all the runners is air/fueled and
the other is just plain air. Meaning the charge stuffed into the CC
will not ignite easily with a direct injected system vs your planned
TBI (air/fuel mixture in the manifold).
The cam also changes between NA vs forced fed, as does the the rest
of the intake/exhaust systems.
Comparing a +60 year old vs a current gen has +60 years worth of trial
and error engineering and fraught with risks and so many hidden to
us outsiders from the design teams
Many more and actually everything on this project (again, love these
but know it must be engineered well) and will just touch on the disc
brakes the OP mentioned
There are disc brakes and then there are disc brakes...
If from a 'car', then they were designed for both lighter duty and
spins much faster. Most are designed for tires in the 21" to 24" dia
range. They also depend on the air flow from a much lower to the
ground vehicle (and it looks like you will have it car height, not
truck height).
Some have hidden ducting and that only works if the ground clearance
is in the 2" range and not with a trucks range nearing 12". It would
or might be starved for enough 'good' air flow
Wish you well...that your builder(s) have the proper engineering and good luck!