Wondering if there are any guidelines on when to upgrade injectors. I found a few sources saying stock 560's good to about 350whp, and then information got...sketchy until the e85 threads.
Mods are below, i was guessing i would prolly need to upgrade, but 800ccish should be fine? This will be on 93 pump.

mods to be accounted for
HTA green
Map v2 intake, 65mm TB
ported/polished exhaust mani
intake, exhaust, MBC
GSC S2s
ETS 3.5", and piping

also semi-considering a sparktech system (but dont think its really needed).

 

800-880s will be fine for your set up. If you have any plans in the future to go bigger set up (even if its a slight maybe) just get bigger injectors now so you dont have to buy them twice.