[BirdOPrey5]

Probably forumhome_complete and threadbit_process...

However you also need to change the variable, $post only works in postbit.

For forumhome it looks like:

$lastpostinfo['lastpostdate']

and for threadbit it looks like:

$thread['lastpostdate']

The way I did this by the way for future reference was to go to Admin CP -> Options -> General Settings -> Add Template Name in HTML Comments -> set to YES

Then load the pages you are curios about- in the source of the page will be comments saying what template the data is coming from.

Then I look in that template and see the variables being used where I want-

Template variables either look like {vb: raw thread.lastpostdate} or $thread['lastpostdate'] depending how they are used... but in plugins and php files they are ALWAYS the latter.