Injectors and Fuel rail ?
I think Katech has a O ring kit to allow you to use type 1 injectors in a manifold designed for a type 3 injectors.
The fuel rails will be a guessing game, if they can be used you'll probably need to fab up new brackets.
Katech may have mount brackets and what not to allow you to use LS1/LS6/FAST rails on a L76 manifold.

