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Wheels are way the wrong offset and probs won't work no matter what. And the seats could definitely be modified to fit but it'll probably cost more than the 2000 z28 was bought for.
Only example I remember seeing of 5th Gen seats in a 4th Gen. Z28 seats would be cool but would be way too expensive and theyll never be a perfect fit. For what theyd cost you could get yourself some fancy aftermarket seats much cheaper. https://ls1tech.com/forums/appearanc...en-mexico.html
As far as wheels, all 5th Gen wheels look lame but Z28 wheels are badass. You probably couldn't find repros in sizes smaller than 20" which IMO look like **** on our cars. Id put them on a CTS-V