With the hose your really better off finding a local shop who will make them up for you rather than ordering your own etc because that hose needs the fittings crimped on with a hydraulic tool. That 12k pressure pipe is probably a bit overkill and will be hard to bend where you want it. You'll be surprised how cheap a shop will make pipes up for you with fittings etc. Block will need to be done at a machining shop most likely you need a lathe to make the opening wider. Problem with that is the front pipes would have to come off too. My guess would be, if the rear pipes going into the block aren't leaking, have the hydraulic hose made up and use compression fittings like you have to join it to the section sticking out of the block like you have with the stop ends. Hydraulics shop will sort out everything you need. Those pipes aren't actually 10mm but rather an imperial size, but sometimes you can get away with 10mm fittings, and you'll want hydraulic compression joints not plumbers ones.