Sometimes classic coupes need to undergo more than a little restoration work in order to bring them up to scratch. But the most enthusiastic car modifiers can take things to extremes.

Last month, Jalopnik reported on a customised 1988 Toyota Celica, which has been outfitted with a monster V8 engine from Ford.

The engine itself is actually designed for use in commercial vehicles, so it has incredible amounts of power on tap and takes the Toyota Celica above and beyond what it was capable of as a production vehicle.

The modders managed to preserve the Celica's original 4WD system, which means that it has its off-road rallying routes in tact, even after the new rear-mounted engine has been fitted.

The car itself was on sale back in December and the asking price was only $6500, which is a modest amount for a classic Japanese racer.

Of course, if you were willing to pay it, you would also take on responsibility for its modifications and also have to work out whether or not it was road legal in your state. This type of custom classic is the kind of thing that only Craigslist could help uncover.