Crate 225?
In the populated area in which you live, it should be no trick at all to find engine rebuild shops. I will say that finding a REPUTABLE one may be a trick. I see no reason AT ALL to be "crating" a a project like an everyday rebuild such as this. People have been reboring and rebuilding engines since the model T
If you don't want to tear your car apart, find a reputatble shop who has exchange engines, or buy a core on Craigslist, or even put a "want" on CL for a clean core