this is a classic case of just searching for a power number. i've built this motor-- twice!-- and can confirm that it does knock right on the door of 400hp and it's a good motor, but it requires a bunch of machine work, a keen eye on assembly and prudent parts selection.
if you look at the numbers, the power band is narrow and it's all upstairs. great in a light car with a 4spd or converter and gears. but the shine comes off that new penny because it's tiresome to drive. i wound up taking off the M1 and demon and putting on an airgap and 3310 (on the 4spd car), the other motor i didn't even consider a single plane when i put it together and went even smaller with the carb.
now when you compare that to a boneyard 360 that will basically make 400 falling out of bed, things rapidly come into focus in the "value for money" department.
