Umm.. I believe it is you that is the dick. I guess we'll do this point by point. As far as the GT500, factory cars are almost ALWAYS rated at crankshaft horsepower, not rear wheel horsepower (are you awware of the difference?) and 450 rwhp is over 500 crankshaft horsepower.
Second off, I believe most people here know how to change there own oil. But we'll use a couple of examples of specific people from this thread. Silverstang is a Ford Master technician, last I checked. Mike98mustang would be a Chrysler factory technician. The poster, juco, is the manager of some kind of repair place (I forget the name), and I am an ASE master technician as well.
Silverstang didn't tell you not to run a 150 shot. He said not to on a stock engine. You never said anythnig about a DSS shortblock. And, like he said, your worthless tuner will probably blow your **** up anyway.
But none of that means ****, because none of us are Mustang EXPERTS that have (supposed) built engines, with cutup air intakes (because who really needs a CAI? I mean, it's only one of the most significant performance improvemets on these cars), and riceboy cams, that can't figure out why our junk is slow and doesn't run right.
I also don't think any of the people you are talking about are kids, old men, or single. Hell, most of our wives/girlfriends probably know more about building fast Mustangs than you do. You are the one that talks out of your ass and throws around childish insults, so if anyone here was a "kid" it'd be you. Also, nobody here has had a bad attitute either, at least not untill you started talking **** about Americans (and I'm not even gonna touch that one, since there are Canadian members here that AREN'T douschbags), once again you are the one getting hostile. SO since it is you that are a kid, and a dick, and you obviously have absolutely no worthwhile information to contribute to this forum, I think you may have already outstayed your welcome.