no point what so ever Glen
Me being me when i got the escos went and got one of them and had to put it back on flebay as there was no point in having it
your BT inlet is good for 450HP then a ST one is good for 500 and the RS500 580+ then i think you would need a spacer for more flow
im not 100% on the above but i know it goes somthing like that and i am 100% sure you do not need one for anything like the power you want/have

Total waste of money when it could wind up making the engine feel more laggy at that power, smallest displacement for the amount of power you have
I.E. if you only want 300-330, stick with original exhaust and inlet manifold change your .63 T34 to a .48, RS500 intercooler, Greens and a 3 bar map sensor and an exhaust you will have one hell of a drivable Road going escos IMO
Im currently looking for a ST escos to do the same as above but with the small turbo for driveability