pehlay yay batao how old are you??
how much budget you have?
do you own the car?
do you have the required knowledge to carry out all the work you self?
simple rule. if you dont have the correct knowledge.. you can never get the correct work done.
as far as whats possible and whats not... well nothings impossible. what you need is the huge amount of money, a creative mind, the correct tools. and space to work in.