As far as the 600 horse, it is completly reasonable because I am not talking about to the wheels
. I am talking at the crank, after my engine rebuild it will be well beyond 600 and I bet I might even be putting out 450 crank with just my current build. As far as the parts cost of doing a 6mt with 180...I have the money to get the 6mt by summer so we will see...the more and more I think about it I am going to go with the 6mt.