I dont know how much bodykits cost lah. But regarding to get
more horsepower legally, you can actually look into getting Air
Filters (K&N,HKS), Grounding Unit Wire, Exhaust - try Remus but
i dont know whether can fit the corolla should be can lah. Try lah.
I own a 1.3 corolla XL. Modded too... i got a K&N Filter and
grounding wire. surely it increase the power... coz i feel a little
faster with those stuff... rather than the stock cars.