Make that in urethane, and I'd be tempted to go with the newer front end. (I like my 88 just fine.)
I've seen the IROC front urethane spoiler grafted onto the Supra front end. It looked very similar, but was not done nearly as nice as this one.
IF you did it in urethane parts, and used a plastic welder and lots of uni ribbon, you could keep it somewhat flexable, and make it look good too. (It would be slightly heavy compared to fiberglass, but it would take minor curb impacts and drive way approaches with little or no damage.