Some of you know I have a 73 crew cab dually c30 waiting for me to start working on. It has a stock 454 that is carbed and not fuel injected or course. I will like to get a fuel injected/computerized motor. I would also like to stick with 454. What do you guys think I should do, buy a brand new crate 454 motor or find one that is used from a 90 + truck?