A Buick 231 engine may fit into a 1999 Chevy Lumina with modifications, but it is not a straightforward swap. You would need to consider compatibility with the engine mounts, transmission, and wiring harness, as well as potential adjustments to the exhaust and cooling systems. Consulting with a mechanic or automotive specialist is advisable to assess the feasibility and any necessary modifications for a successful installation.
No, there is no information suggests that a 1996 Buick Century 231 will fit into a 1999 Chevy Lumina.
The 99 Buick Century 231 engine will fit into a 96 Chevy lumina with a little fabrication.
Hollander interchange says it will
Yes
yes it will fit
No, they are 2 totally different bodystyles
No, the compressors and mounting points are different on the 95 Lumina
Yes
No, Chevy Lumina Z34 ever came with a 3.7L engine. So probably not.....
3.4, and 3.8.
Yes it will, I did the interchange on mine
NO.