If you are looking for a project, have access to tools and a machine shop and think your truck is too slow then get a donor block and try out the EB 150 HP build. You will still have all the reliability of a Toyota, it would be a relatively inexpensive project (Especially considering you were previously fixing an Audi <img src="/forums/images/graemlins/scared.gif" alt="" /> ). Seriously I agree with the "if it ain't broke don't fix it" theory. These are motors like any others but also have their little tweaks that need to be addressed. I find that out the more I read here. Chances are you would be fooling with the sensitivity of the engine more often after a build up than you ever would while stock.