Potential 360 build couple of questions

sweet deal! so does this mean that i could easily go with a solid roller cam for alot cheaper than if the block wasnt a roller one to begin with? would the lifters still be okay, or would i have to change them out?

also, what would the compression be on a motor like this? im assuming somewhere like 8.5:1, but im just guessing

this engine is starting to look like a real sweet deal