How easy is this to fix? I realize its a matter of pulling the manifold and cleaning up area and re-installing it. But what all has to be moved/removed? I jus seen where its leaking from the front, but didnt poke around to see what would be involved. Trying to hold out messing with motor til I can get the scratch for a GM crate 350cid. But I may have to fix this prior to that. Any tips, suggestions or recommedations appreciated.