While I was at Pier's Dynomania back in September, I talked with Bill Kondolay of DTT. He stated that some of his ideas have been put into the new 48RE, and that if you don't tow heavy (over 10,000#) the 48RE should handle 400 to 420 HP without any upgrades.
I guess time will tell.
Has anyone had any experience with a 48RE between 400 & 420 HP?