im getting ready to replace my stock fuel pump (pressure is low) can any body tell me the best fuel pump to replace it with id like to put in a good one as i intend to add some more engine mods later it has a custom chip in it now and a apr any help is appreciated thanks ec its a 1990 5.7 iroc z

 

Unless your planning to build a full-out race motor, the stock ac delco pump should be fine, imho.
That said, there other pumps you can buy , but Someone-who-knows-more-than-me will have to post here, I have no experience with aftermarket pumps.