Golf 5 door 1.3 into 3 door 1.1

Hi everyone, I'm looking to do a shell change. I have a 5 door 1.3 and it will be a shame to break it but i prefer the 3 door version. I was wondering if any of you could help me, is there anything that won't transfer out of my 5 door into the 3 door other than the seats? 
Appreciate your help 

apart from interior stuff like headliner, seat, carpet etc it will all bolt on. The dash and everything around that will fit!

Side glass and side trim will also be different, running gear and engine should be the same, you may get some difference if the ages of the car is a lot.