What is required if I put a vw turbo diesel in my Suzuki to get smog legal. on 1990 Suzuki Sidekick

This is 1989 Suzuki sidekick 2 door 5 speed 4x4

Asked by for the 1990 Suzuki Sidekick
In Texas it would not be legal to sticker with modifications, need to check your state laws first.
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You'd have to make that turbo diesel run as clean as the Suzuki originally did, and have all of the pollution controls intact. (EGR, Catalyst, Evap, PCV etc.)