They will not fit straight out of the box.
You have 2 bulb sockets for the stock tail lights that you need to put into the altezza. Once you take out the original lights, you will notice one of the 2 sockets is noticably bigger then the other one (its longer).
The way they made the socket holes in the altezza, the original bulb sockets will fit without a problem but once you put the tail light back in place the longer of the 2 sockets will hit the body of the car, preventing the altezza to fully go in place.
What you need to do is modify the socket holders in the altezza so that you can put the longer of the 2 sockets in the bottom hole of the tail light instead of the top one, 5 minutes and a simple rotary tool like a dremel will do wonders.