240s are fast not because of big horsepower, but because they handle well. Its what I call the lotus effect. If you want straight line speed, stick with the accord. If you want o be able to take a corner at a decent speed, buy the 240. This is of course stock v stock. A 240 with a RB has plenty of straight line power even from a dig, and still whips around the corners. To reach 300hp, you will either need to rebuild and turbo the stock engine, or swap it out. Both will probably cost you the same amount of money. There are many write ups in the 240 section on how to do either one.
240sx-180sx-silvia-forum.html