All Fiero body pannels from any year will fit any other year (except 84' door pannels) thats one of the amazing things, the interchangability.
The areo noses dont have any built in moulding (unlike the rear bumper) so yes, you can get the little triangle mouldings with round moulding. Though you'd probably have a hard time finding one without, as 85GT and 84 indys are the only two models to come aero nose with ribbed moulding. The marker lights are interchangable as well. You will need new inner wheel wells though, as there is a little triangle of added material for the aero nose. You could probably add some yourself, though if you couldnt find the aero liner.
Edit:
Eh, I think 86SE were also ribbed trim. And I think there was some where the trim was one piece with the nose, maybe 84 indy 85 GT. Its too late to be remembering and using thinky parts.... snooozzzz....
[This message has been edited by 86GT3.4DOHC (edited 05-02-2008).]