ok so doing a lot of research on injectors since i am planning on a portfueler install when i get home in may

hahn is charging 76 bucks each for their 500cc injectors
65 each for their 415s
no price listed for the 440s but i imagine between 65 and 76

racetronix charges 55 each for their 525cc injectors

http://www.racetronix.com/17113738FM.html
seems like a no brainer

question is will they fit
i know that the racetronix is high imp
but i started looking at physical dimensions and injectors are not all the same size
they are close, just a few milimeters of each other but would that make enough of a difference to justfiy paying the extra cash for the injectors from hahn

thanks