Rough price i reckon will be about 130 notes. Not cheap, but it looks good. lol.
Good work on the hoses, i need to sell mine, got loads kicking about.
No need to drain the header tank, easy enough to block it off when taking it off and pour it into the new one.
Top hose is 8mm, same as the N75 and i'm not sure on the lower, possibly 15mm.