I bought a set of Bosch EV14 Fuel Injectors.

I have a 1997 Toyota RAV4 turbo, with the 3SFE engine. I installed a set of Supra N/A injectors, 312cc. Which fell way short of what I needed. So, I got the Bosch EV14, 550cc. But when I went to install them, they are too small for the head. Looking around the net, I see that I'll need 4 of Lower Adapters. Can anyone tell me where I can purchase them?