yeah gas milage is nice but power comes first, who makes the best aftermarket FI kit that can handle a turbo motor that get 7-10psi and wants 15-20psi? I am a carb guy but now that i am finally making my motor turbo i am thinking of going FI as well. and can any of these aftermarket kits be used with TEC2 or haltech or simple digital?

 

you probably already have a killer manifold and layout, how about minimizing the changes with a system like this from holley part #950-109

 

Sorry, I found my old info and this is the info and part #'s I came up with a long time ago but holley has their site screwed up on these part #'s now: "What if you could put Commander 950 fuel injection on anything? Have a 1954 DeSoto with a "Firedome?" No problem! How about a 1969 AMC AMX? Sure! With Commander 950 universal MPFI retrofit kits, you can fuel inject any V8 engine you desire.
With just a few additional components, you can be roaring down the road with a multi-point fuel-injected engine!
Includes:
Commander 950 ECU and pre-terminated harness.
1000 or 2000 CFM billet aluminum 4-barrel throttle body.
8/ Injector bungs.
Billet aluminum fuel pressure regulator.
MAP, coolant temperature, air-temperature, and oxygen sensors.
Comprehensive application installation instructions and tuning guide.
KEY FEATURES AND BENEFITS
1000 CFM (534-183) or 2000 CFM (534-184) throttle body for maximum airflow.
Industry-leading comprehensive application installation instructions and tuning guide are included to make converting your engine to EFI as straightforward as possible.
8/ Injector bungs are included to simplify intake manifold preparation.
The tuning precision and flexibility that only the Commander 950 software and electronics can provide.
Includes all necessary sensors and a pre-terminated harness to provide an easy and clean installation in any vehicle.

APPLICATIONS
Any vehicle with a V8 engine and 4150 or 4500 carburetor flange.
TARGET GROUP
Street Rods
Pro Touring
Off-Road vehicles
Drag Racing
Road Racing
RECOMMENDED ACCESSORIES
950-125 "Race" Software Upgrade

Requires:
* 4-Barrel carburetor intake manifold
* Fuel pump (sized to application)
* Fuel injectors (sized to application)
* Fabricated fuel rail hold-downs
* 30-100 micron coarse fuel filter
* 10 Micron high-pressure EFI fuel filter
* Throttle linkage
* Some fabrication and welding
* Assorted plumbing
" the 1000 cfm unit uses a regular holley carb pattern and the 2000 cfm unit uses a dominator type flange. dont be intimidated on large CFM on an EFI car because the fuel is injected right at the intake valve so it is not completely as critical as carb sizing.