I would not pay cash for it. But I would probably put down half the price of the car at the time of purchase... A late 90s (they dont make them anymore) Ferrari F355 is in the region of about $80k-100k. In 2 years I expect that to go down a small amount. If I can save up and put down $40k Ill only have a loan for $40k, which isnt much more than what the 350Z loan was for.
Insurance on top of the loan is what would kill me, and Im still not sure I care to pay for it.