I'm of the opinion that the 351W is one of the biggest pieces of junk that Ford has ever made. If you don't need 700-800hp, why invest in a block capable of taking it? There is no reason to go to a 351W setup unless you plan on making more than 350hp N/A or more than 450hp with forced induction.
Almost every stock 351W ever built makes signficantly less power than the stock 5.0HO, and you'll have to make the exact same modifications to a 351W that you'll have to make to a 302. All the 351W represents is extra weight, extra money, and extra gas consumption. Oh, but you do get to grunt and act like a 351W under the hood is a significant upgrade.
Fat0eknee, the bone stock 03 Cobra's were making nearly 400hp. With only the slightest of mods, they were making 425-450. Stock LS1 F bodies were making nearly 350hp. The problem is not with the horsepower, but the vehicle in its entirety. I disagree strongly with a 375hp car being difficult to deal with. That has to do with the tires, brakes, body rigidity, and suspension system. A properly setup car will behave night and day different than a 400hp otherwise stock Fox body.