Would you be interested in an SD1 2.6 cylinder head and some other SD1 bits in exchange for the vice? Clearing out parts at my parents and there are some useful bits. We are just down the road in Stoney Stanton.
Head is missing a couple of valves and no springs or collets. But top & bottom of the head are there plus the cam cover and both cams. Looks like it would be okay with a clean up. Plus have a couple of other SD1 bits. Could arrange to pop over and see you one evening if that suits you?