There is a company on youtube that has done the compressed air setup. It works really well, but you can basically only store enough compressed air for one 1/4 mile pass. They used really big tanks.
Link to compressed air car --
It seems that alky/water gives the best bang for your buck...
I think this would technically be into the outlet of the turbo. The alky is being sprayed into the air that has been compressed already. I think that you would get more benefit spraying into the inlet (low pressure side). Cool setup tho.
New intercooler and Power Plate before getting turbo. You can turn up the boost a few psig with the stock turbo, and it will make noticable power.
Get turbo after that. More boost and more power. Not too crazy tho on the pump gas.
You can also search using Google. I think that Google searches further back in time than the website search function.
When in google, search for "turbobuick.com turbo". That will search the website for any instances of the word "turbo".