I have searched very thoroughly but can't find much information on this. I am planning on doing a wrx or sti full drivetrain swap in my ea81 brat. I have found a good bit of information on swapping in the ej20 but not the ej25.

 

Any body have any experience with this? will it be too wide?

the ej20 and the ej25 are the same size. if an ej20 fits, an ej25 will fit as well.

good to know, for some reason i thought that the heads were a bit wider.