Hey holden I meant to get back to you about the setup.
My thoughts - You did well with the suspension and brakes, makes it more manageable but, unfortunately, still not into contention for the suzuka TT (but thats the cars fault not yours)
One thing I did with it is throw the gears right out long so I'm only using 4 the whole track. I've done this before with the GT where there are low gravity (top of hill) corners. It means coming out the esses and round dunlop you don't have to back off when you shift up to 3rd at the top of the hill.
Also from the hairpin there are two shifts coming up to spoon and if you get them right the nose turns in with the shift, bringing you back onto the line whilst keeping it floored.
I've copied your suspension and brakes onto the tuned GT and it works even better on that car. Sadly the Stock GT just isn't a competition winner but it's still, by far, one of the most fun cars to drive.
That's "fun" in the - wrestling with a pocket full of tigers - sense