Ok, that's a standard fit. Note the TAPE AUX button. At the moment the AUX function doesn't do anything as there is nothing plugged into the AUX socket on the back of the unit.
Ask the seller to confirm, but the conclusion I draw from the photos...
Kit 1.2 attaches to the AUX socket on the back and it mimics the behaviour of a CD changer, so the files and folders on the iPod appear as numbered discs/tracks.
Kit 2.2 looks the same as Kit 1.1, but with the addition of a Y-splitter cable to allow a loop-through for an installation where there is something already plugged into the AUX socket of the back of the radio (such as a CD changer), but I doubt anything is plugged into the back of yours at the minute.
Kit 1.3 looks like it does the same job as Kit 1.2, but as well as having a plug for an iPod, it also has a 3.5mm jack connector, so you could plug a non-iPod device in with a 3.5mm jack to 3.5mm jack lead such as a mobile phone or generic MP3 player.
However, there is a question of the plugs on the back. I'll see if I can find pics later to confirm. (Work interrupts)