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As Title. I can see why Bosch did the Mod on the later 086. Screw cap is more secure, and the Fly lead comes out at a better angle. The 063 Fly Lead comes straight out and is held in place with a fork. Mine has been mashed and bent back with the HT cable holder damaging the wire. From looking at the 2nd hand wires available, it seems I'm not the only one whose done this. I've replace the wire with a 4 core shielded wire (doubling up on the connectors), I haven't found the right gauge 2 core shield wire yet, but the 4 core seems to work fine. The wire now also goes directly into the Ignition module, as I bought the car with the plugs missing (was twisted and taped together). So even if I bought the correct cable I'd have to find the other part for the loom. Luckily I have a bag of new Bosch female spade connectors, so I can re-pin most plugs on the car. I'm looking to get mine (063) reconditioned but parts like the fly lead are hard to come by, So alternatively would a 086 be a straight swap? I'm guessing the Fly lead is the same if I cut off the plug and connect it directly to MY Ign Amp? Would anything else be different? mounting face? Timings? I'm not too bothered about originality here. Engine has been replaced with a B6E keeping the 113 tooth Timing belt (spring type tensioner fitted with B6D Pump and covers). Head has been machined and the resultant CR should be about the same as the B6D. As far as I'm aware the AFM, ECU, Coolant temp sensor, TPS, Injectors are all the same for the 1.6 Xu5Ja. The coil I think is square mounted on the Inlet manifold and the Ignition amp my be different? Not sure, I'm hoping someone can advise? This was another 2 core shielded wire (brown and white wire) going directly into the ignition amp plug. Gauge was thinner than the original wire so I fit the 4 core (Above) back in. Didn't really need to change it as the fault I found was the Tach Relay socket (see other post)