about how big of a shot is equivalent to a certain amount of boost in say an integra? Like is 55hp of spray equal to 6lbs boost?

Probably like 5 PSI, depends on the turbo kit. Like a DRAG kit is supposed to get you 255 HP from like 11 PSI, so around 5. I know the drag kit comes set at 8 PSI, but they got those numbers from 11 PSI. Most people forget to read the fine print thats really hard to find.

It all depends on the size of the turbo.
I gained 7whp for every psi on my old setup.
a 55 shot is not always 55hp. It varies per motor. Your looking at 35-55whp for a 55 shot. I gained 49whp from 6.5psi on a small 40 trim t3 (.42 a/r)