If I could go back in time I would buy as many 550 Maranellos and 360 Modenas (manual only) and fill a warehouse with them. They are gorgeous looking cars today and destined to be future classics.
I had the opportunity to purchase a 550 Maranello for $75K about ten years ago. I should have done so, as it would have been a great investment. I would have had to scramble to find that kind of cash though. But I did have quite a few good years driving a 308, and I suspect that is enough Ferrari for me.