Actually I am wrong about the regulator. The two port would be fuel in and fuel out but if you want to run a fuel pressure gage you should get the three port regulator because you will have an extra port and if you don't use the extra port you can always block it off.
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James Cox
nochevy@hotmail.com
1991 Mustang LX
12.565 @109.38mph 1.764 60ft