That looks real nice, You got the spark plug leads nice and neat,
I had a Falcon ute with lake pipes and a 302 Cleveland, lumpy cam, it was Honorably loud, then I got a 3" system with a flowmaster 50 series muffler witch sounded like crap not at all like a v8.
I reckon 2 X 2 1/4" system with glass pack mufflers with tail pipes pointing straight out the back.