I laughed...
The intake and exhaust mods might add 'some' more go, but in the end you are limited by what the car has and what the ECM/ECU is programmed to provide. Sure, the engine is an air pump and the more efficiently you can get air in and out, the potential for more power will be there. However there are LOTS of other factors affecting horsepower numbers.
More air means more fuel, but your fuel injectors can only provide soo much more based on ECU programming as you begin to reach the upper limits of all things in the fueling/ignition system. There is a limit to adding power to a N-A engine with basic bolt-ons, even with chip tuning. And the list is bigger than this as there are a lot of parts that make up the power potential.
It is not as simple as adding a bigger carb, changing the jets, adjusting the timing, like days gone by, to get more power.
Even though these mods will get you a bit more power (not sure where in the rpm range) and potentially add to your skid-pad numbers, it is tough to say without a base line. No 1/4 times. No slalom or figure-8 numbers. No Solo I/II; AutoX times. No dyno numbers. Without a baseline, it is tough to say. Sure, it may be faster, but by how much?
As mentioned above, better tires will help. However, all the power/grip in the world is only as good as the person behind the wheel. I'd look into some sort of driving school, and if you are close to a major race track, chances are high there is a school there. You don't need a racing school, just a driving school like Skip Barber, Bondurant, or similar. Multi-day is best.
I'm near the Mid-Ohio Sports Car Course and here is a link to their driving school page -
http://midohio.com/more-news-a-announcements/576-the-mid-ohio-school-s-2018-course-dates
Have fun and enjoy the drive.
(drive2)