I want to design and fabricate my own twin turbo kit for a ej25 motor in a GC8. i don't know what turbo to use that are small and spool really fast. It need to be able to support 400 WHP. Thanz give me some support with design and ideas. also i would need a place to make a custom front mount intercooler and piping. anywhere cheap. thanz again

 

Why is it that you think you have to have a twin turbo setup? Do you realize most aftermarket upgrades for TT cars including going to a single turbo setup since it will weigh less, be less complicated, spool up just as quick, support more hp and be less expensive. Not to mention in a Impreza you have to deal with trying to get all the extra crap to fit in the car. Do a search for twin turbo or TT and you should have all the info on doing it that you will need. If your going to shoot for 400whp then you might want to source a dog box M/T first cause theres no way in hell the stock box is going to last very long at all.