would using a jun3 intake cam and stock exhaust cam on a gsr motor or an itr motor work?ive heard of using a jun2 intake cam and itr exhaust cam, but what about a jun3?

 

I seriously doubt that would work. Intake and exhaust flow need to be balanced, or else your engine can't run efficiently. The JUN-3 is a HUGE cam. There's no way an ITR exhaust cam can keep up with the JUN-3 in VTEC. Just get both JUN-3s, they give something like 30hp at the wheels as soon as you dial them in. The set with Ti springs and retainers is only ~$1600. Pretty good hp/$$ for an all motor mod.