You will never get it as fast as a turbo model. The 4g63 is just a superior engine.
If you want to build what you have go ahead but its a waste of money in my book.
I took a 91 Talon TSi automatic and went 13.8 on my third try at the track with under $1000 in it and that includes buying a brand new 2.5in turbo back exhaust.
Imagine if you were to buy the car and actualy put alittle money in it. It would be in the 12`s with another thousand dollars easily.