I'd like to thank everybody for your answers, Now I'd like to know whats the (cheapest) way to supercharge my Z28?
I don't know about cheapest, but if you Google "Camaro z28 supercharger" there are dozens of kits available. but I recommend NOT buying one from EBay or Craigslist, you don't know what you are getting, that is if you get it at all after they take your money. Craigslist itself is reputable, but it is notorious for scams
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