I'm really keen for a set on my E89 (13 plate - 2.0 the turbo one) - I think the 18, 20 and 28i are the same?. What measurements do you need?
Outside diameter of the standard pipe?
Diameters of the existing tips?
depth of the tips?
I know one of the pipes and (existing) tips has the exhaust flap through it, do you need measurements for a cut-out for that too?
I can take some pics when the rain buggers off if that helps?