Sounds as if we might be of similar vintage when I see your car history! I too lusted after the BMW 2002 while serving in Germany, but couldn't afford it. I envy your Austin Healy Sprite, such a cheeky little car. Still I've had a number of 'interesting' cars including a BSA three wheeler, and a very rare Triumph Gloria Southern Cross, both older than me.
I hope you enjoy your MX5, I'm still trying to get to grips with his my third MX5, hoping it is in better condition than the first two. (I chopped in a twenty year old Boxster 3.2S for my 'new' 6 year old MX5 'Arctic' and it is very different to my first two. I don't like the fact that it doesn't have a traditional glove box relying on storage all behind the driver, nor the fact that the seat doesn't have any vertical height adjustment. Still I'll get over that, watch this space.
Enjoy!