A lad in europe was making like 115-20hp on a 4efe but that was running some serious mods for a 4efe. Might even had been on throttlebodies. From what you've said if (might need a adjustable fuel pressure regulator) id expect around the 100 mark. Also just had a gander on google. Inlet and exhaust manifold are different on the 4efe 89hp models, injectors differ and most likely the map on the ecu. So get the cast 4-2-1 mani from a 97-99 bugeye corolla as well try the injectors as well and then get some higher octane fuel (v-power or tescos momentum 99ron) and get someone who has some det headphones and advance the timing to get the most out of it. A FPR might also be advisable for this as well. Not too sure only going on what I've read lol