Hmmm, Expansion tube... By moving the expansion of the AC gas to the front trunk you may have to also move the pressure switches or install a binary switch for the fans/high pressure switch to operate. The metal body of the expansion tube may not get hot enough for the switch to operate due to it being made from metal and conducting heat away from the switch by the expanding gas. A possible solution is to move the switch closer to the condenser. In Bob Martin's AC install I just have the fans come on any time the AC is running with an interposing relay. As I look at all of the detailed pictures of this swap first off I would like to say, I love your hand made sketches, always impressive. On another note, I was always under the impression that the K20 and variant swaps were let's say rather simple and the Abarth Swap was more complicated. Looking at your build I come to the conclusion that all swaps are labour intensive, have several issues that need to be resolved by custom fabrication and at times have trade off's that must be accepted. Thanks for all of the pictures that explain the process of bringing this all together. TonyK. Grimsby Ontario Canada.