Open the hood and look at tthe fuel rail. 1 or 2 lines going into it? 1 line it's a late 99 w/ returnless.

-'96 SE MTX 3L -'98 SVT 1,173 of 6,535 -'05 Mazda 6s, loaded, g/f's ride -Need a 96-00 manual on CD? PM or email me