Power Query SQL (Source) run with manual table parameter?

Try something like this:

let
    paramBusUnit = "North",
    txtBaseSQL = 
        "select Projects_SV.*
        FROM Projects_SV
        Where Projects_SV.[Business_Unit_ID] = 'ABC'",
    txtSQL = Text.Replace(txtBaseSQL, "ABC", paramBusUnit)

in
    txtSQL

Is that something you can work with?