I found something that may be of interest to you if you really don't want to cut up your wires...
If you were to do modded fuel rails with an SS M90 or topswap, or perhaps injector spacers with a topswap, these Multec 2 "shorty" 42 lb/hr injectors might be for you:
Racetronix-Delphi_Injector_Sale-72s
These are GM late model SUV stock injectors and are widely available.
Your current injectors are 21 lb/hr as I recall. I've been looking for "long" style Multec 2 injectors with higher flow rate, but have been unsuccessful.