Quite a few years ago, but I once traded a K motor for a warm 4k. The guy that got the K motor was going to use the crank in a 5k for a Sports 1300 motor to destroke it to under 1300cc.

 

Would be great for a top end screamer, if you were to run a close ratio gearbox behind it to keep it in its' powerband. Great for a race motor but really pretty useless on the street where you want a wide powerband.

That was my thinking. No torque at usable revs for the street. Unless you could find some serious diff gears or could stump up for a custom gear set you wouldn't bother.

yeah i drove this k engine up in darwin, would pull 2 and 3rd squeelies

was very tough engine and would shoot past 8k rpm