for the carby, have a geez on ebay, thare are normally a few on there at any given time. also manifolds to suit.
the extractors will need to be either welded or flanged to your existing exhaust. your prob better to take to a exhaust shop and get them to do it. from what i gather, the 200b struts will require a bit of mucking around to fit, you may be better off with some 120y or coupe disc struts.alot of the members here go for the stanza ones.
have a read of the tech section about exactly what needs doing with strut upgrades