Installing coilovers Options

[HectortheRican]

I know that there's a how-to, I've read it several times, but it talks about grinsing something and saving bearings, but when he was talking about coilovers, the pictures showed the same springs. I was wondering that since I'll be putting on the Megan Racing coilovers, I'll have to do any of that, since the Megans seem to be quite complete and I wouldn't be using anything from my stock strut assembly. The how-to also talks about greasing the top cap, would I have to as well? I'm just curious