Those old ones have a nice exhaust sound, but they are so chick car looking.
And, $30K+ buys you a lot of exotic car in today's market.
For that kind of money, and for Ferrari level maintenance expense, why not get a real ferrari instead? Something like:
Ferrari : 355:eBay Motors (item 160385729453 end time Dec-18-09 14:31:29 PST)
A huge advantage to a Ferrari is there is actually a large (and getting larger every day, because of the very low cost of these as used cars these days) DIY base.
Used Ferraris are in the dumps these days, esp. if the car needs a service, or has anything wrong with it at all (even just a bunch of minor things).
For that maserati chick car, I'd imagine you'd have a very hard time finding anyone who DIYs them (or, not many). There isn't going to be a lot of DIY support for that car, and if you have to take it to the shop to get things fixed, it will quickly become a "way more $$ than it is worth" proposition.