I have about 130,000 miles on my 5.0 and I am trying to think ahead when it is going to give up on me. I want to build it up to make more horsepower but not extremely so that I get under 10 mpg. I thought about just getting a slightly built mustang crate motor with about 325 hp at the crank or getting a 347 stroker motor. I also considered getting a 351 windsor crate motor. I do not want to rebuild the motor, I just want to start fresh as I plan on keeping my truck for a long time (6 more years of college). I can do most of the installation myself but want to try to keep it under 5 grand. Any suggestions or ideas would be helpful. I should have at least another 20-30 thousand miles left on the engine but I want to go ahead and start saving the cash.Thanks.