ok i did some search on an engine swap for my 92 mazda protge and i have read that people only change the block to convert a soch into a doch is that possible

 

Ok, I know we are trying to break the Guiness World record of which forum submits the same question the most, BUT for the mean time....

Just use the SEARCH property on top and write engine swap to see post about your subject.

Well, it turns out we are also trying to break the record for the same answer on a forum.

 

Don't know why I'm bothering. YOu don't change to block you would be changing the head.
It is a complicated procedure, and you would be better off just getting the entire engine rather than the head.