Also a good idea to copperslip the mounting faces for added protection....
IMG_2851[1] by The_Wild_Boar, on Flickr
IMG_2820[1] by The_Wild_Boar, on Flickr
look the part and also worth investing in stainless fittings and lots of copperslip....
Untitled by The_Wild_Boar, on Flickr
cheers steve