ok ive got everything in and swapped parts over to it from the a2 that I needed, but the old ac unit wouldn't bolt onto the a4 so we kept the a4 ac unit thinking it might work, but now that its in I was trying to hook it up and there is no way it will work, i cant find a/c lines for the a4 except ebay but if i did get them i just needed to know if its a pain or not to swap out or if they even fit?