Ask any BMW fan what their favorite M5 is, and chances are they will tell you the E39. It comes from an era in which BMW’s performance cars were not only fast, safe and engaging to drive, but also carried a timeless beauty in their design. 

Combined with a V8 engine sitting at the front that sent 400 horsepower to the rear wheels, the E39-gen M5 could sprint from 0 to 100km/h (62mph) in just 5.3 seconds climbing up to an electronically limited top speed of 250km/h (155mph).

Despite leaving production in 2003, after six years on the assembly lines, the BMW M5 E39 remains an enthusiast favorite to this day, something that’s reflected in the insane prices being asked for pristine examples.

Now, there’s a lot to like about the E39 M5’s successor, the E60 M5, starting with its sonorous 5-liter V10, but its looks (and SMG transmission) fall more on the controversial side, as its swooshy design wasn’t (and still isn’t) appreciated by everyone.

While each model has its fans (and detractors), somehow we don’t see the logic behind blending the two. Say what? Well, just look at the following image:

We might not all agree, but we understand favoring the looks of the newer E60 over the older E39, but combining the two? That’s insanity! Yet that’s precisely what this E39 owner did through a plastic prosthesis of the front and rear ends of the E60 to his M5, turning it into a Frankencar.

In all fairness, though, we’ve seen crazier things. Remember this abomination creation:

If you forgot, read about it here: Audi-Faced, BMW-Tailed Subaru Impreza WRX is the Definition of Overkill

Back to the M5, the conversion didn’t include the V10 engine of the E60, but it was estimated to cost some €25,000 ($29,230). The car is said to be in “best condition”, and besides the aforementioned upgrades, it has 19-inch rims coming from an M6, sports exhaust system, new air filters, adjustable air suspension and a v-max increased to 305km/h (190mph).

Also Watch: Warning: POV Test Drive Of BMW M5 E39 Might Make You Want To Buy One

With 136,500km (84,817mi) on the clock put since 1999, this BMW M5 is now being offered for sale. The German seller is asking €34,750 (equal to $40,630 at today’s rates), according to the ad posted on eBay.

Though, we’re not sure why anyone would pay that, given that in Germany, you can put both cars in your garage, as a decent (albeit sometimes, high-mileage) M5 of either generation (E39 and E60) can be had for under €15,000 ($17,500).