Let me add that speed cost money......
How full is your wallet?
Then we can tell you if it's Doable!

You have skill, or gonna pay someone to build it for you ? Buying talent means you'll need to bring more money.

If you want speed, then you may want to rethink the Zu 4 cyl. Not enough after market hot rod parts for the 4 cyls. But, if you've got deep enough pockets I guess custom hardend rods and forged pistons are nothing for a stepper.
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CJ