Here is a set that I fabricated at customer request.
Machining one end of each fitting to 15 MM inner diameter, Welding + 1000 PSI pressure test $60.00
Fabrication of the 3000 PSI Hoses + buy fittings $70.00
My time to R&R the set $50.00
FOR A TOTAL OF $180.00
Note: Your local cost will vary, I just did another set today (8-16-2011) = supplies and fabrication total $95.00 for the pair.
Comparison of part cost..
Oil Line, To Bottom of Oil Cooler
MB# 617 187 12 82
Fastlane:
http://catalog.peachparts.com/item.wws?sku=6171871282
Oil Line, To Top of Oil Cooler
MB# 617 187 15 82
Fastlane:
http://catalog.peachparts.com/item.wws?sku=6171871582