Engine was assembled in-house (it was not without comments ..). My garage is to cold and to smal for any work on engine, specially during the winter . With only new engine parts assembling engine in-house was no problem regarding any dirt or oil. And it was warm and pleasant sitting in my sofa assembling - I can recommend it ;-) The only worry was how to move the engine out in the garage when due. Today I decided to move it. Couple of hours later and without any assistance - engine is ready for going into car.
I will install engine in car on Saturday. Hopefully it will go in as easy as it came out.