For horsepower ideas, Steeda managed to get 576 whp
https://www.mustang7g.com/forums/threads/576-horsepower-to-the-wheels-naturally-aspirated.173497/
without a blower or turbo, naturally aspirated, so it may be easier to keep cool on the track.
BUT
E85 may not be around every track. At...
OK, now that you and I are both fully aware that you know much more about this than I do, lol, here goes.
One set of 19" for daily driving with a good summer tire.
Tires and wheels for track only, go with 18" - much better selection of tires and some very serious track tires come only in that...
Sounds awesome, but I am not on that level (financially or in driver skill).
My oldest son sells Porsches for a living, so I get to hear all about their performance, and, yeah, I cannot help but watch some Youtube on track reviews of various Porsche models, but, again, not in my budget. This...
So HPDE track sessions are typically 30 minutes or less. You mentioned "track days" in your next post.
What will you be doing that that is longer than 30 minutes, much less "hours on end?"
LOL, I would not have guessed anything by a quick glance at the top of the engine bay.
I stated 30 mins only because of your typical HPDE track day sessions, which are in that range of 25-30 minutes each.
I will be very interested to follow along and see what you have in store for hours on...
What do you intend to do to the engine to use it on the track?
The Coyote easy button of bolting on 875 horsepower and ripping down the drag strip before stopping off for groceries on the way home will not work for a 30 minute track session.
I do not know how much the intercooler has changed from the S550, but this guy:
picked up 20 whp on the dyno with just an intercooler upgrade, no tuning.
https://www.streetmusclemag.com/tech-stories/bolt-ons-for-beginners-basic-mods-for-2-3-liter-ecoboost-mustang/
"Our Mustangs can handle...
LOL, ok, got it. You may be far beyond what anybody here on this site can do to help you.
BUT
Go take a look at TrackMustangsOnline.com
Nothing but track mustangs there.
I would love to follow along with any build thread you post here, though.
Post up a pic of your new car as it sits now...
First things first. I know that this isn't cool and exciting, but the first thing is seat time.
You will see little Hondas and Mazda Miatas and even SUVs out on the track driving surprisingly quickly around the track.
There is a track forum here.
I suggest you start with this thread from...