im currently running the following mods

ams short ram intake
t1r ic pipes
gm ebcs
turbo xs catless tbe
dw 850cc injectors

and i just ordered the kelford 214-b cams with the springs

my question is would i see more hp with the ets 3.5" intercooler or leave it stock because it wont matter for the hp im gonna make until i get abigger turbo

 

Take a look at your intake temps. If they're low enough, then you won't need a thicker core. It looks like you can invest that $ in some other places that would provide more benefits.