Do you think the 4.8is replacement is going to be around $90k? It seems a bit too much. According to bmwusa web, the 2007 M5 is currently starting at $82.5k. Can the 4.8is be more expensive than the current M5? I reckon that at most bmw can charge the 4.8is replacement at around $75k to $80k, what do you think? I just can't see how a 4.8 bi-turbo can be more expensive than a F-1 technology v-10 engine.