I am looking to swap out my motor out of my 95 gmc truck. What will I need to change to make it work correctly? Injectors, and the ecm chip anything else?

I plan on getting a new crate motor.
Which motor would be the best to get the?
Truck version non roller cam p/n 12568758
or the 92-93 caprice motor p/n 12513151
anyone have specs on these 2 motor, like cam, cr, hp, torque, ect? as provided by GM

 

You may need to switch distributors. IIRC, '95 was about the time the truck engines started using the cam phaser under the rotor.

Don't forget a 350 (old style) knock sensor. I believe the neweer versions have a totally different signal range.