I voted for three, but I'd like to make a suggestion, if I may.
If money was no object, I think it would be cool to do a W-30 style scoop on it. There are fiberglass versions available for, say, a 1970 Cutlass that would look pretty nice, but would be very custom, as you would have to hack the scoop off the W30 hood and graft it onto the Alero hood. Hence the "if money was no object" thing.
Really though, #3 isn't that far off from looking the same.
http://http://cgi.ebay.com/ebaymotors/1970-70-CUTLASS-442-W30-RAM-AIR-HOOD-STEEL-FIBERGLASS_W0QQitemZ170240095993QQcmdZViewItem?has h=item170240095993&_trksid=p3286.m14.l1318
.