I bought a 1996 Silverado with a low mileage 305 crate engine in it and I would like to boost the power. My friends tell me to put a 350 engine in it but the 305 only has a little more than 25,000 miles on it and I just don't see the sense in wasting the life left in it. I would like to boost the power to at least 250 to 275 horsepower if it can be done without much expense. Any help will be appreciated.