I have a debate on which engine too use in two of my trucks. I have a mint condition 73 /forums/images/graemlins/k5.gif with a mildly built 350/sm465/np205 and 35. I have a stock 74 400 that I am debating putting in it. Should I go with that or build a late model 383 for this truck. Its main purpose is cruising aroung and eating mustangs for lunch. The other truck is a 86 /forums/images/graemlins/k5.gif with a old 350/sm465/np208 that is starting to get weak. I think I am going to go with a 383 and an rv cam with a stock throttle body fuel injection off a 90 model truck. I have been debating these for a while and now it is time to do both of them but i havent made up my mind what I want to do.