The picture is not fake!
Yes it's in km/h. He's Canadian.
I'll try and dig up the website.
He has step by step photos of the install. (It was done a while go)
Even if it was bone stock
That's 240HP/280TQ in a 2700lb car (2600 + 100 for larger engine) I'm sure you can all do that math!
ATX or not it's fast! (if stock GTP is 14.9-15.0 and weighs 3400lbs!!!)
BTW - I timed it (video) 3 times.
~6.5 0-60mph (with wheelspin to boot)
~14 0-100mph (New Mustang GT is 14 @ 100 in the 1/4)
I wouldn't want to race it...

Okay I would...
