engine swap to streetport
 

hi everyone i have s second gen 91 n/a six port im swaping the motor for a streetport 6 port and i want to know if i have to upgrade my ecu or i can still use the stock im not going turbo if anything and wat other thing i have to do or change for good response

Stock ECU is fine.

But be aware that if it's the typical massive port "streetport" 6 port engine that seems to be popular, it may be a lot slower in the low and midrange than your stock port engine.

is a mild streetport would i have to upgrade my fuel injector or fuel pump

No fuel upgrades are required. A SAFC or some type of fuel controller and a dyno session would be nice.