In fact when I 1st started putting these kits together DW didn't even want to sell me the adapter w. out buying injectors from them as well. I had to talk w. the owner and set up a vendor relationship so that I could buy the kits in bulk from them without having to get injectors. At the time they did not sell 270cc injectors, they only had 370cc TT ones or larger (redrilled) ones.