We here at GM Authority love a high-horsepower build just as much as anyone, but when the ride in question was built at home in a garage, well, we’ve got to give an extra nod of respect. Such is the ...

Let’s be honest – engine output is totally insane these days. That’s doubly so when looking at the aftermarket, where four-figure horsepower numbers are quickly becoming the norm. This twin-turbo 1969 ...