What model corolla do you have? The 1990 Toyota Corolla never came with a 2.4 L Engine. You either have 1.6 L dohc fuel injected or 2 bbl carb.
There are two versions of the 1.6 dohc fuel injected. The 4AF-E, which is the less powerful economy engine with little upgrade options or the very popular tuner engine --> 4A-GE, which in the model only came in the two door coupe Corolla GTS.
If you have the Corolla GTS you have tons of options to make huge power. Especially for such a light tossable car.
If you have a four door Corolla then your cheapest, and easiest route is drop in a 4A-GE, and build up the engine, with a turbo or supercharger.
If you drop in a bigger engine, you will just throw the balance of the car off. Plus it will take a lot longer and cost more money.
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