MODS Question

I know Id posted this before but I cant seem to find it again. So my question is, what mega mods are out for SH4 and what in a quick essence do they change?
I know of RS RD, TMO, and I forget the name of the one that makes it the atlantic campaign which I would really like, Im not so much into this whle Pacific thing. I will also need the links to the Multi Sh4 Install download as I will probably run one version in the atlantic and the others in the pacific. Thanks guys