I NEED HELP!!!!! please its urgent?
How is this urgent? It's not like it's an emergency rebuild.
If you're fully restoring the entire car, say hello to....easily $30,000. Depending on the level of restoration, and how detailed you get with it, it can be much higher.
Otherwise, why bother restoring the original engine? Get a crate engine for a few thousand, and have basically a 0 miles engine.