I need some insight into a motor I am not familiar with. I am looking into a rare and original

1994 25th Anniversary Trans Am GT with a LT1 and a 6-speed trans. There was only 2,000 of these made and only 110 had this trans.
My questions are what does any of these add-ons do to improve the performance.
1. Throttle Body Air Foil
2. K & N Series 57 Fresh Air Intake ($233.00)
3. Is the stock shifter smooth enough or was the Hurst unit better
4. It has a BORLA system already

5. Install the shift plug that replaces the 1-4 upshift (under 15 mph)
I want this to replace my 1991 Formula and have a rare and original Trans Am that I can still take to shows, but have a little extra balls. You guys are the expert in this area and thanks for any advice!