Its all the same stuff.
E85 either comes from CSR or Manildra. Unless Powerplus are making it themselves which i doubt.
As we were going through installing the new fuel system all parts that were taken off the car were inspected, everything looked great
The injector O-rings are not brittle and have no sign of cracks or premature wear at all. I was comparing them to a new set that i have and i cannot tell the difference between the two.