Hello all! This is my first post on the forum. I'm in the (un)enviable position of building up a new K Series lump for my S3 from across the pond in Michigan, USA. The engine is going together quite nicely (see pic)! http://i76.photobucket.com/albums/j24/Aric_Streeter/Seven6_zps00ee9899.jpg Most parts were sourced from Dave Andrews and DVA Power, aside from a few reused parts from the previous engine in the car (a 1.4L SS K-Series), I'm uprating the dry sump from the purple to gold spec CC kit with the bellhousing tank, I purchased a whole kit of parts from CC, who, I must say, were not very helpful in figuring out what I needed. Suffice to say, there are a few head scatchers for me, with the one remaining one being this: http://i76.photobucket.com/albums/j24/Aric_Streeter/IMG_2152_zpsa01c8bc0.jpg I haven't messed with the bellhousing / tank yet other than to remove the fill plate readying it for the conning tower setup, and I venture to guess this may be for the tank feed to the pressure pump? Any hints? Cheers, Aric