those look identical to the five o motorsports 800cc injectors i got awhile ago i had to do the same thing to the injector body absolutely easy as cake and just to be clear dw will only give 100 for stock wrx blues and 200 for dark blues which already flow 565 so i dont know why you would buy injectors to only flow 100 more cc but thanks for the post ive been looking for some small injectors for my dd