Some rookie questions

I'll have to agree with 1BadDoge71 and 65LoveAffair. Decide what you want out of it and compare with your budget to see what you can do. So far I've installed the 2bbl carb/intake, added a bigger exhaust, advanced the timing, added an electric cooling fan ( to reduce drag on the motor, but in each instance, the power found wasn't enough...
With all of that stuff done to it, it is about as fast as any standard sedan in traffic.
About average overall and that wont cut it

Now I've built a turbo setup that I'm almost ready to have a go at again...and I'm afraid that I'll be upgrading the turbo and etc because it wont be enough...

A slant can be built to be really fast ( check out the forced induction section ) but you are talking about a huge amount of money, time and planning.