I doubt they'd down size the Boss engine to 5.0 since that engine would be a dog on the street w/ such a short stroke. For 5.0L, Ford can already do that w/ their Mod engine by using a 3.7" bore. However, w/ Hemis and 6.2L Camaros, Ford isn't going to do much when their GT500 w/ a supercharged 5.4 makes only a bit more power than those other engines. Ford needs the 6.2L Boss to compete. It may be a short run but it will be a blast (especially w/ 4V heads).