update i got these in the post today and i just finished fitting them took me an hr and a half now i have to leave it for an hr for the silicone to dry then take it for a spin and let u guys know how she went
edit
took it out for a spin about 10kays and seems more responsive louder indution noise about twice as loud as the two hole mod noise, i filled up on fuel [bp ulitiate as always] so i will see if there is a difference there, all in all im happy with it total cost was $142. i will take it out on the weekend for a cruise and see how we go on the highway.