I didn't instal either one, I'm going with a new kenne bell set up and want to use the stock fan. The shroud mounting holes will need a tap ran through them to mount the tank. The holes were stripped from the previous owner.
really good deal. Would have bought in a heartbeat if i didint have to get mine from Procharger because at the time no one was selling. This is perfect for anyone getting an on3 turbo i think.