I am in the process of getting C5691157 back on the road and Im to the point of making sure the car is mechanically sound before I paint it. The engine number in this car is 168. The reason I ask is I believe my car is number 182 and if Im correct, while the numbers are close, it isnt the original engine. A few things are affecting my decision. One, the engine does run fair but it was stuck when I got it and it took a lot of effort to make it run. I give it around a 30% chance that it straightens up and runs fine but I know from experience that wont always be the case. Another thing, I just happen to have a rebuilt low mileage 57 Lincoln premiere engine along with a new, correct 56 Mark II transmission that will bolt right in. If in fact, this number 168 engine thats in it, has a correct number that matches the car, then I dont have a problem pulling it out and freshening it up. Whatever happens afterward I plan on selling anything thats left over so its a matter of making sense to make use of all these parts I have on hand. Thanks!