Depends on what you are looking for...but dont try to tell me that an LSx is better than the audi 4.2, its one of the best motors ever made. I dont think it weights more. Not to mention pushrods are fail, its fucking 2009 people! That motor stock makes 420, I can almost guarantee that it will respond better to mods than an LS1, its just that since it uses the latest tech, shits more expensive to mod, and it wouldn't make any sense to put that in an rx7, it belongs in an R8/RS4.