There have been people that run the B-Codes quite often. The first difference is the injector spray angle is completely different so you'll have to replace the nozzles in order to be able to hit the bowls properly.
what about code bn code injectors? i didnt find nothing about them in that post
BN injectors use a stainless steel compression gasket instead of the copper found on most HEUI injectors. This was because they changed the injector cup in the head from a brass to a stainless steel for some applications. I do not know any other specifics other than the stainless steel gasket is to be used with the stainless steel cups.