Working on swaping a B18A1 in to my CRX and I ahve a few motor questions: 1) In the 1st picture of the axle, you can see the boot is stretched. I can't push the axle back together, it feels like it's pulled out. Can I remove the boot and fix it or do I need to get a new axle? 2) In the 2nd picture, is the green sensor the knock sensor and do I need to hook it up?If so, do I use the plug off the B18 harnes and run the wires to the ECU? 3) In the 3rd picture, what do the hoses go to?