In a PM conversation yesterday evening, I mentioned that these two models are part of my classic car history. I bought my first Saab 96 in 1981. A '76 cinnamon red Saab and I bought my pageant blue '78 Spitfire in '95. The colours of the cars I owned were reverse from the cars shown in the pics.
Besides that, it's most uncommon to have two cars stripped at the same time. No worries about mixing up parts: the Spit is 'on it's way back', being assembled. The Saab's parts are on the shelf to be overhauled. Different process, different shelves.