You didn’t have to change the heads…nor would you have had to buy anything extra by running the TBI heads…all you accomplished by changing them is you cost yourself a point or so of compression so the 305 will be slower yet.
You didn’t have to change the heads…nor would you have had to buy anything extra by running the TBI heads…all you accomplished by changing them is you cost yourself a point or so of compression so the 305 will be slower yet.