New "Bad cast" error, unsure of how to fix?

So. I have made a Morph which has a model, a script, parts and unions and a script that should add it to the player. But, I keep getting the error:

15:42:08.307 - bad cast
15:42:08.308 - Script 'Workspace.Model.Model.Spawn.Torso', Line 13 -- suitw.Part1 = G[i]
15:42:08.309 - Stack End

My code

function onTouch(hit)

    if hit.Parent:findFirstChild("Humanoid") ~= nil and hit.Parent:findFirstChild("BTorso") == nil then
        local suit = game.ServerStorage["BTorso"]:clone()
        suit.Parent = hit.Parent
        local G = suit:getChildren()
        for i=1, #G do
            if G[i].className == "Part" or "Unionoperation" or "Model" or "Script" then
                local suitW = Instance.new("Weld")
                suitW.Part0 = suit.MainPart
                suitW.Part1 = G[i]
                local autoW = CFrame.new(suit.MainPart.Position)
                suitW.C0 = suit.MainPart.CFrame:inverse()*autoW
                suitW.C1 = G[i].CFrame:inverse()*autoW
                suitW.Parent = suit.MainPart
            end
            local bpW = Instance.new("Weld")
            bpW.Part0 = hit.Parent["Torso"]
            bpW.Part1 = suit.MainPart
            bpW.C0 = CFrame.new(0, 0, 0)
            bpW.Parent = suit.MainPart
        end
        local c = suit:getChildren()
        for i=1, #c do
            c[i].Anchored = false
            c[i].CanCollide = false
        end
    end
end

script.Parent.Touched:connect(onTouch)

I have adapted my code from the answer on: https://scriptinghelpers.org/questions/28266/bad-cast-error