I'm gonna upgrade the intercooler on my MY99 will one of a 03 sti fit and what will i have to do to make it fit also what hose will i use

 

some modding needed not hard

 

you will need a good bit of modding like making new mounting brackets , cutting power steering fluid resivoir, cutting some pipes, there is a guide or two on here for doing it, have a look in the search area,

i did this this conversion about a year ago and it took me a full day, at first you think it aint going to fit but it will with a bit of sweat and blood,

JOnny

 

You'll need:

An undertray
Samco Y pipe
Brackets
Dump valve
Clutch res (or cut your old one)

You'll probably find the bulkhead will need a bit of hammering to fit.

Should be a fair few guides on here.

 

or you can have a STI top mount from my97 that i have laying about!

 

Use this as a resource mate Scoobypedia | Trusted knowledge for everything Subaru | Knowledge / DIY - STi 8 Intercooler onto MY00 Classic