90MM throttle body questions!!

[wrestlrjared]

I have some questions hopefully someone has some answers. Well I picked up a 90mm throttle body and wanting to replace the 60mm, Can get the adapter for it but am wondering about running lean i have been told to just put SR20 injectors in it. I dont know if this is true maybe a higher pound injector, adjustable pressure regulator? Idk where to go with it anyone know?