You'd need to check the specific transmission codes for both the 1992 and 1996 trucks to see if they are compatible. Even then, it's not guaranteed. You might need an adapter, which can be costly and complex, or it may not be possible at all.
Before attempting this swap:
* Identify the exact transmission codes: This information is usually found on a tag on the transmission itself.
* Research compatibility: Use online forums dedicated to Chevy trucks (like the Chevy Truck Forum) or consult a parts supplier specializing in transmissions. They are your best resource for verifying compatibility.
* Consider the cost and labor: A transmission swap is a major undertaking, requiring significant mechanical skill and specialized tools. Factor in the cost of the transmission, any necessary adapters, fluids, gaskets, and labor. If you're not experienced, it's best to have a professional do it.
In short, while *possible* in some very niche scenarios, it's highly improbable without significant modification, and probably not worth the time and effort. Finding a used transmission specific to your 1992 Z71 is likely the more practical and cost-effective solution.