
I'm amazed some of the UK suppliers haven't got their heads together to offer a complete kit.
Other points on finding TDC. Not only do you not have to be dead accurate as you can just sort it out with your PC, you don't even have to bother about which cylinder is firing as EDIS is wasted spark and fires both. Just line up your existing timing marks on the pulley or flywheel.
If you did want to establish the exact TDC you could do it through the spark plug hole but you'd need a dial gauge and a protracto.