If it was me i would use whatever car is cleaner. for example, if the 86 had any kind of rust and the 92 didnt, i'd throw the 86 nose on the 92. and vice versa with the drivetrain situation
I know alot of people that like the 86 front end alot more than the aero ones(including myself), but dont like the interior/moldings of the 4-eye cars. so its the best of both worlds really
I would love to swap my aero to a four eye. Mostly because its a 4 cyl to 5.0 swap so it doesnt matter what i did to it. I voted dont even try to fix that wreck. swap into the 86.