I am not converting from carb to AFP FI (I'm installing initially), but as Walt said, the natural position is clamped to the engine mount between the servo and spider. In this position you can have fairly straight feeds before and after the FF sensor, and a constant up-slope from the servo to the spider as recommended by AFP. For what it's worth, my installation is on a taildragger with vertical induction (as I assume you have, since you have/had a carb), and I'm not flying yet so I can't vouch for performance.