Say what you will, but classification as "supercar" or "race car" at the end of the day is just classification. With enough money invested, you CAN outperform and outhandle a so-called supercar. I would rather spend 100k on my Z and make it unique and mint, and still be able to outperform a good bunch of "supercars".
But this is all my opinion. It all depends on preference. If you want a Ferrari, don't buy a Z and build it to try and be on par with one, just save up and buy a Ferrari.
If you love your z, you can build it (if you're willing and able financially) to beat what you want it to beat.
In the end, when you talk about tuning cars, the Z or any other car for that matter is just a platform. What you do to it, what it ends up being capable of is entirely up to you.
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540whp @ 10.5 psi 
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