Guide for Modifiying your rails for Nissan Injectors

Pinktops
stock -180cc shaved-480cc

purple/tan
stock 370cc shaved-unknown

red tops
stock-270cc shaved-550cc

You want to search for "sentra injectors", "KA24de injectors", "SR20 injectors" or even "nissan injectors"
A fuel rail complete with injectors can be found from $20 to $60. Some come complete with injectors clips.

Cars that have Nissan Injectors that can fit in your fuel rails (with modification)
FITMENT: 6-cyl
1995-98 Maxima 2988cc
1993-96 300ZX 2960 VG30D
1993-95 300ZX 2960 VG30E
1992-95 Maxima 2988 VO30DE
1996 I30 2988 VQ30DE
1993-96 J30 2960 VO30DE

FITMENT: 4-cyl
1995 200SX 1998cc SR20DE
1991-94 Sentra 1998cc SR20DE
1991-93 NX 1998cc SR20DE
1991-95 G20 1998 SR20DE
1995 240SX w/AT 2389cc KA24DE
1993-95 Altima 2389cc KA24DE
1991-94 240SX 2389cc KA24DE

Now you need some injector clips. Those side feed were used on a lot of cars. Anything from a 200sx to a non turbo 300ZX. You local junkyard is waiting.

Only for injector clips:
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1995-98 200SX 1597cc GA16DE
1991-98 Sentra 1597cc GA16DE