My dump pipe had 5x12mm nuts and one 13mm :s also I had just enough room to use my 1/2 inch breaker. Something smaller would have been easier tho,
As for the banjo bolts are u refuring to the ones on the turbo? I MIGHT have my old ones laying around. If u have the time and money I'd go braided lines tho.
Edit: just read it is for the water line, if I remember I will have alook after work, u may still need to replace the copper washer tho