I've bought a used Wilier Cento 1 carbon road bike frame (not the new Cento1SR, but the previous model). Now I would like to transfer all Ultegra 6700 groupset components from my existing bike to it. My current bike has narrower bottom bracket frame body than the Cento 1 so it uses Ultegra BB that extends from the frame. Something like this:
Wilier Cento 1 on the other hand has a wider bottom bracket body which says Wilier Oversize Bottom Bracket as seen on the image below. It's about 92-94mm wide (I haven't precisely measured it, but you know what standards are out there). This is how it looks like with fitted cranks (in this case Campagnolo):
The main question
I know I have to buy some additional BB bearings and plugs to put them directly into the frame but I don't know whether this is a kind of PressFit system so I would require some special tools to correctly install these bearing into the frame or are they just snuggly put in so I can actually do it myself without any extra tools?