[Driven97]

Also of note (and a full pardon if this is being presumptuous) don't forget all the other stuff. Having better flour is only one ingredient of a complicated cake recipe.

Do all the cheap / free stuff first - Play around with tire pressures, there's usually a fair amount of time to be found just with that. Remember there is an optimal pressure - more pressure and less pressure than optimal = less grip. You'll probably find the oddly balanced 911 likes pressure stagger, too - more in the rear most likely.

Max out the camber, make sure the toe is right, run big caster, make sure the corner balance is good. The camber & caster will improve your steady state grip. Rear toe can tweak your balance, especially on power, and front toe can tweak your front end response. A funky corner balance will make the car behave differently on LH & RH turns.

Then you need to identify what the car does well & what the car does poorly. That can direct your upgrade path. How does it accelerate? How does it brake? Does it slalom well or is it sluggish? How is your mid-corner balance? How is it at turn in? How is it when you go to WOT mid corner? Are you hitting the bumpstops?

And remember, everything is a trade-off. Making a car "better" at one thing can often make it worse somewhere else, whether on a track, between the cones, or on the street. My car, for example, is now "tolerable" on the street where it was originally quite comfortable, and is now likely loose to the point of scary at track speeds. My original goal was minor tweaks to make it locally AX competent, the scope has crept to attempting to hang with Nationals caliber STR cars. Setting a goal before you turn a wrench is a great idea to keep you focused.