A had the same problem as you a number of years ago and ended up sourcing out the small brass fittings for my cooler lines through Diotte Hydraulics. Is there a place local to you where they can make up hydraulic hoses and service hydraulic parts? I would start there. I wouldn't be able to help you with your brass block if you're going for the OE look but if not, your hydraulic hose retailer could help you out with that as well.