Reminds me of a vacuum cleaner noise. What's the black concertina hose, is that your intake? I forget.
Can you take it for a wee spin with that disconnected?
Probably not. But hey can't hurt to rule it out
The industry is moving to 10.9 bolts now.
We wedge the problem areas open with chisels, knock out the rust, and squash it shut again with hydraulic g clamp
It's not pleasant