The words Seca and sedan contradict each other - the Seca is the liftback/hatch, the sedan is, well, the sedan. But apart from that, what you have mentioned is pretty much the standard basic way to mod an AE112, I'd suggest getting new shocks along with the springs (KYB Excel Gs are the best cheap option). Sorry mate, the owner made a mistake - It's actually a 99 Corolla Conquest sedan. How much would I be looking at for some decent spring/shocks and a sway bar? Anyways heres a pic of it http://img33.imageshack.us/i/dscf5350.jpg/