Don't know about how much it lowers it, probably not much, as for the paint, you have to fit the kit on first, then take it off, send it to get painted, then put it on when it comes back.
CelicaHobby.com is an independent Toyota Celica enthusiast website. CelicaHobby.com is not sponsored by or affiliated with Toyota Motor Sales, USA, Inc. in any way. The Toyota and Celica names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.