So i'm planning on doing an rebuild and porting and a stand alone fuel system on my N/A 88gxl. I was wondering if I were to change to different injectors which to buy and how man cc's, or should I just keep the stock injectors.

 

i wouldnt go above 550cc . i could be wrong , but if your doing a normal streetport on a NA then 550's should be fine

 

This has been covered so many times it's in the FAQ.

Keep the stock injectors unless you find that you need to upgrade (not likely).