So I'm closing in on 23 and wanting to get a badass car before I get a girl prego, end up married, or both. I have a 500whp mustang dynoed 4 cylinder car that I bought stock when I started college mainly because it was a great fuel mileage car and something I could have fun in. Well, I also run a business while in college and make pretty good money so I ended up with the addiction for power. I have always been a die hard Ford fan and loved mustangs but ended up getting cars that could get me back and forth to work and etc. Well, now I'm older and can afford the better things, (Plus I'm tired of this pos chevy breaking every time I decide to give someone a ride in it) so I've been looking up and reading on the new 5.0 and the S197 GT500s and they are both comparable in price. My buddy has a 5.0 fully bolted and bama tuned that I ran in my car and put a few car lengths on but I was spinning the whole damned time. I need some help deciding whether I should go 5.0, built block from MMR, and boost it....or go with the S197 GT500 and throw a big whipple or kb on it. If I had to pick a number of where I would want to be as far as power, I would think 700+ whp on a mustang dyno for those weekend runs and still be able to drive the car to work if I had to even though I have a few other vehicles to drive. Which do you guys think would be the winner here? I'm stuck between the 2 because both are similarly priced but I have seen people pushing over 800whp on the stock block 5.4s and only around 650 on the 5.0s. Also I have access to a 100 octane pump if that makes any difference to you guys.