[blykins]

As long as you can make a lot of horsepower without making an engine fussy or finicky, I'd go for it. A 500hp 347 isn't the most streetable thing in the world, but a 500hp 482 FE is.

The truth be known, if you aim for 300/400 hp now, you'll want more a year down the road. I'd rather have more horsepower now. You have a gas pedal. It doesn't have to be pushed to the floor all the time. ;-)