Hey! I'm down in Colorado Springs. I hope the engine rebuild goes well. I had my car tuned out of the state (05 OBXT) and currently have bigger turbo (BNR 18g), injectors, DP, TMIC, etc. I like the setup, but I am planing to add parts for e85.
Current mods: https://docs.google.com/spreadsheets/d/1RdXAxPldpf0A0YS4G00VjTBCAu320GY-pCwXV1EHcEc/edit?usp=sharing
If you want injectors, once I get everything situated, my 740cc side feeds will drop right into your setup. I would suggest a bigger fuel pump and upgraded wiring though too (~$200 max probably).
It won't effect emissions. Your cat has to be CARB compliant in Denver, so watch out for that.
I agree with @BoozeRS05 regarding Cryotune... lots of info and support here from them and they would know where to get your heads rebuilt.