Hey guys this is my first post in a long time. I picked a 03 gsxr. Was originally a 600. Guy I got it from thought it was all original and so told me thats what it was. After purchasing the bike. Driving it home and diving into it to repair oil leaks I noticed it doesnt have the right look. So found the engine code and its a 750r from a K3 gsxr. Has throttle bodies from a 1000. Which somewhat explains why it felt more powerful then it should have and is over powering the clutch springs @10kplus rpms. That bing said I have since weeded out of the guy that he got a it from a father and son who built it for a race track and when he bought it he put street plastics and street tires on it..... Now to the inector issues. I got a set of injectors for a 750. (It also said could be used on busa.) I installed them but bike is acting like its not getting enough gas. On a hunch I tried tracking down the old injectors part numbers but it kept coming up with injectors for a honda s2000. I am really confused. Have any of u heard of someone doing this? What should I do? Where do I go from here? I am half tempted to say screw it and put carbs on this bike but I dont really wanna do that.