Mike, Im pretty sure your 4.8 will make a great engine for your project, it just lags a little more than a 5.3, and they both give you around the same MPG. You didnt pay much for it (great score) but if you want a 5.3, just keep looking, theres lots of them out there! If I were you, I would use the 4.8 since you already have it....
