Don't overthink this.
And especially don't go anywhere without replacing the timing chain. It very loose and has been replaced once, but the a master link was used and the keeper clip installed in such a way that it could be dislodged with the chain rattling against the front main bearing housing. Major headache if that master link parts company.
but never with the benefit of an actual shop manual
Get as shop manual. Clymer or Haynes. Today.