But basically what i was asking with everything else aside is this: AND I AM GOING TO USE MYSELF AS AN EXAMPLE.

I have a 1992 camaro rs. it has a 305 which stok creates 170 hp. the car weighs 3100. Now i dont no about you guys, but i dont consider that fast by any means at all. so i am going to upgrade and modify it.

now i have consider this alot and there are basically 2 paths i can go.
i can tune the car meaning, keep the 305, intercool it, edlebrock heads cams lifters covers ect, do dual turbos, and change the chip to the BC4 package. (police chip)

or i can drop in a Zr-1 vette engine, and super charge it. (chevy expermented with this and called ti the collectors edition 92 camaro, only 10 produce and 9 were destroyed. its on tour with the Camaro Heritage Tour)

My point of asking the question i did, is that i know my car. i know how much torque and sway i can place into that car with out reinforcing the frame, which i dont want to do. SO MY ORIGNAL QUESTION WAS WHEN FACED WITH THESE TO DIFFERENT PATHS WHAT WOULD YOU GUYS CHOOSE ON YOUR CARS AND WHY?