Fuel injector question

[Dllrd23]

I’ve rear through most of the posts on this subject and thought I would get the group’s opinion. I have a 2.7L 5 chain engine out of a 01 Boxster going in a 1999 replacing a 2.5L. I have kept the original intake crossover and used it as the front so that I could retain the cable driven throttle body. The intake is from the 2.7. Rear crossover without butterfly valve is retained in the rear position. For the fuel rail I used a 3.4L rail because it bolts up directly and is a return type. What fuel injector do you recommend? Still running the stick computer with no tune (yet). I don’t think I can run the 2.7l as they go on a returnless system. That leaves me with the 2.5 (no specs found) or the 3.4 injectors? What is your opinion?