Princeton TEC Torrent LED modification

Hi all,
first of all...this is my first post, so I hope I am inserting it in the correct thread

I own a Princeton TEC Torrent LED 95 lumen, and it works quite good. I heard about the possibility to replace the LED with a more powerful one, but I really don't know how to do it.

First step: which led? I know that Seoul P4 is very good, but here I cannot understand which part do I need.

Then, do I need some extra cooling system? I don't know the normal current absorption, but I guess with a more powerful LED it will be higher!!

If someone can explain step by step how to do it would be very appreciated!!

Thanks in advance for the answers

Ciao!