Although I am an innocent bystander in this conversion, I would like to direct your attention back to post 342
I guarantee that the 546hp number is corrected, and the ACTUAL horse power was considerably less...using your 23% number, that would be ~ 420hp (I had originally guessed optimistically for the OP).
Look at the parts used, the head flow, the compression, the cam....it adds up to a low to mid 500 hp motor AT SEA LEVEL......Just saying.
Happy 4th everyone. :-D