Spark Plug wires...

It is the same when I take universal wires, or is it better when I get the Original or aftermarket?
We have here Wires from 1 Meters and more, they I can cut by my self and make the connectors on the wire...

Is the lengh important? I have some here from the Pontiac Trans Sport 3.1 and some wires are longer then the original...

in my opinion it wud be less expensive to go ahead and buy new wires designed for your car engine - less troublesome in the long run as well