Quick question, is there any pre made special bracket for this combo? itr tb on a gsr manifold?

 

as far as i know all bseries are interchangeable, i may b wrong tho

 

yes they are interchangeable. the gsr tb has a bracket for the throttle cable due to the original intake manifold clearance. you will need a non gsr throttle cable. i believe almost any non gsr cable should work. i know one from an itr or si should work.