I'd say a 1.8 MX-5. But if this is a son/godson, he'll hate you forever.
Second generation RX-7s are quite nice.
My fantasies (right at that age) currently revolve around early long wheelbase 911s.
Fieros are actually worse to insure than 911s here.
And of course, there are the ubiquitous ponycars. Mustang, Camaro and Firebird/Trans Am.