im in the process of doing this now. cars still taxed and insured and the worst job I've done.
fuel tank off, fuel cradle off, wishbones, springs, struts, every thing off, wire brush, kucrust it all, primer it, brush pint hammerite colour to match rest of car, its looking nice.

having all new brakes pipes made, got braided stainless steel fuel lines ready, new brake n fuel clips, order new springs mine corroded, got stainless steel rear lines ready, new 044 bosh fuel pump, new cradle, new mad rewire loom ready, tank refurbished, wishbones this weekend getting done, poly bushes then for the wishbones making the car 100% poly everywhere possible/

all takes time, a little bit each night