The birdie was correct
I bought new 60lb injectors with my short engine in the LS1 format.
Schwanke will make them (or have them made) in any configuration you want for about $350 a set from memory.
I run progressive twin 1000cfm throttle bodies and found that it was really hard to control wheel spin until I fitted a progressive throttle linkage aswell. But if you run FBW you can dial in the progression how you want.
I'll post some pics soon.