Will a transmission out of 2001 Lincoln Town Car work for 1999 Car?

It's *possible*, but not guaranteed. A 2001 Lincoln Town Car and a 1999 Lincoln Town Car are very similar, but there might be subtle differences in the transmission that could cause compatibility issues. The best way to determine if it will work is to:

* Check the transmission codes: Find the transmission code on both the donor (2001) and recipient (1999) Town Cars. These codes are usually stamped on a tag on the transmission itself. If the codes are identical, it's much more likely to be a direct swap.

* Compare the bellhousing: The bellhousing is the part of the transmission that bolts to the engine. They need to be compatible. Even with similar-year cars, slight differences can exist.

* Consider the engine: The transmission must be compatible with the engine in the 1999 Town Car. While likely the same, confirm this.

Without checking these specifics, you risk buying a transmission that doesn't fit or function correctly. Even if the codes seem identical, there's a slight chance of minor internal differences. A professional mechanic specializing in transmissions is the best resource for determining compatibility.