I own a 1994 Impala SS. Im looking to get more performance than 260hp. I looked around the forum and see guys talk about converting the 350 to a 383 and some use a crate 383. My questions are which one is better for performance, gas, price and easier on labor? Also what are the pro/cons for each when it comes to other upradges on the rest of the car? Reviews on your own experience are much appreciated...