Howdi Andi, and welcome to the asylum!
Share the specs on your prospective bus; year, make, model, engine, transmission, condition, fuel, it's origins, et al.
There may well be pitfalls you're unaware of, and it's much better to know in advance if it will prove to be a problem child or not.
There're many hugely competent folx here who can steer you in the right direction.
Not me- I'm a total
diesel Noob, but I'm learning. So, take my advice. Its not like I'm using it..!