* Transmission Code: The most important factor. 1993 and 1997 Rangers used various manual transmissions. You need to find the transmission code (usually stamped on the transmission itself) for both transmissions and compare them. If the codes are different, they likely won't be compatible.
* Bellhousing Bolt Pattern: The bellhousing is the part that attaches the transmission to the engine. The bolt pattern must match between the engine in your 1993 Ranger and the transmission from the 1997 Ranger. A mismatch here means the transmission won't bolt up.
* Input Shaft Length: The length of the input shaft on the transmission needs to be compatible with the clutch and engine in your 1993 Ranger. An incorrect length will prevent proper engagement.
* Wiring Harness (if applicable): While less likely with a purely mechanical transmission, there might be minor differences in the wiring harness if any sensors or switches are involved.
In short, while a swap *might* work, it's not a sure thing. You'll need to get the transmission codes for both trucks and compare them *carefully*. If they differ, consult a mechanic or a Ford parts specialist to verify compatibility before proceeding with the swap. Assuming the codes are identical, you'll still need to ensure the bellhousing pattern matches.