That would be cool, but I'd be afraid of a engine that someone had in a vehicle and yanked out. I would need to here it run. You would also have to run race fuel all the time in a engine with that compression.
I'd also be afraid the cam would not come on until 3,000 rpm or later. Mini stock engines are in no way street engines. He ran it in a 4 X 4, does not state how the 4 X 4 was used or why he took it out. I suspect he drove it on the street and it was a nightmare.
By the way, that seems to be the story on high output motorcycle engines, even in something light, such as a Locost. Go like hell, PITA when driven under normal street conditions. You can easily get lost in the sequential shifter when slowing down as the torque band is narrow and you quite often have to drop more than one gear. Oh yes, you need good shoe leather (or high quality tennies) and a strong left leg if you want to back up.
Other than that, I'd guess they're almost perfect for an Alpine.
Bill