Compression question

Thank you all. I have it back in the garage and I'm not 100% sure which direction I'm going to go. I have the intake off, I'm at the point were I believe we are pulling the engine and heading in one of the following directions. I've seen re manufactured long blocks for around $1500-$2000. Or have this engine rebuilt or rebuild it ourselves but as you all can see that may be out of my scope of work. Or buy a Magnum out of a later vehicle as suggested. I have some questions about that particular option:

Do they use the same motor mounts, water pump, exhaust manifolds?

We have an Edelbrock Ld4B intake, will that bolt up to a later 5.2 heads?

Again, I can't thank you all enough! This has been a struggle and it's nice having a place to go for friendly advice and help.