Found this earlier today. May be worth looking into if you’re wanting to go back to stock. Hopefully they’ll produce a speed density version as well.
lmr.com
5.0 Resto Fox Body Factory Air Intake Tube - Repro | (89-93) - 5.0
Breathe new life into the engine bay of your 1989-1993 Fox Body with this reproduction factory air intake tube from 5.0 Resto!