I picked up a nice 99.5 2.8 with a blown motor recently for super cheap. I have available to me a 2.8 out of another B5 with only 69k on it, but it has been sitting untouched for 6 years. It ran when it was parked. Can I change fluids, spay some oil down plugs and run this one? I am doing this on a very tight budget so I am hoping it will work. I know paint and body, not really knowlegable about mechanical. thanks!