Ports are 3/8" on that pump right? Isn't that smaller than the fuel lines? iirc they are 1/2" but it's been a while since I put my lift pump on.....
3/8NPT to -8 AN or 1/2 JIC is a straight thru fitting, nothing wrong with that. Always going to lose size on fittings unless you go to the next size up.
Airdog II 165 is 3/8npt in & out.