This should also be addressed here:

How can you convert a returning to a returnless fuel system? Can you keep the returning injectors? Will they slide right into the returnless injector holes?


Mazda 6S, V6, Speed Yellow 5 Speed, Sport package Bose audio Painted 'stash and HIDs! w/Injen 1/4 14.750 @ 94.94 Former car: 99 Contour SE Sport Black MTX V6 SVT plastic... 1/4 - 15.012 @ 90.58