I have a '77 Ford F100 with 302 with a 3/4 cam, holley carb, headers, and C4 trans combination. The truck runs and sounds extremely strong, but my issue is from time to time, I pull a car trailer on the back. I think I want to find a little stronger motor to pull the trailer with. I've been told to go with a 460, but I dont want all that extra weight. I'm considering three options. Getting a 302 stroked out, trying to find a 351, and I was told by a friend I should be able to find a 331 out of an early '90's F-150. Any advice? And will the 351 or 331 bolt up and work with the C4 transmission and drive shaft?