And believe it or not, there is a difference between chip programs with regards to the two styles of 42# injectors. When having a chip cut for this injector, make sure you specify whether they are Lucas 42.5#ers or Bosch Green top 42#ers. I have personally seen chip issues when it comes to these two injector. FWIW, all 86-92 GM and Ford injectors are the same style Bosch electrical plug and o-ring size. The only possibly wrench thrown into the works would be the 86 SVO which had small # low impedance injectors from the factory.
HTH
Patrick