LEI & Domino incremental installer 6.5.4 to 6.5.6

Upgrading a Domino server (windows) from 6.5.4 to latest fix pack 3 at the 6.5.6 level. One big reason is to fix some LEI problems that 6.5.6 has resolved (like sending Null values to Oracle.)

Using the incremental installer to upgrade from 6.5.4 to 6.5.5 to 6.5.6 and then FP3. Having a hard time figuring out if LEI 6.5.6 is included with the incremental installer of the Domino server.

Is LEI included in the Domino 6.5.6 incremental install. If not, where is the incremental install for LEI 6.5.6. Assuming here that the versions of Domino and LEI still need to match.

Thanks.