Hey, good catch! We did redesign our adapters in the past 6 months or so for logistical and design purposes. Functionally both versions work 100% so what you have is good to go.
Our 2150s do also include an additional filter basket in the top adapter on applications where that is possible just for an extra line of defense against debris and contaminants coming from the fuel. Its not required, but it doesn't hurt to have if you can.
How are the injectors working out for you? We're always interested in feedback and take pride in our excellent customer service.
Fuel Injector Clinic