Here you go Paul, here's the Airfix kit that I'm chopping up to make more accurate. I've put resin engines on it, including centre engine exhaust with aluminium pipe in the the centre engine intake.
The wing fences on the leading edge of he that wing are incorrectly represented on the Airfix kit.. On the kit they are on the wing trailing edge which you will need to cut off and then make your own for leading edge. I used plastic card for that. Cut and sand to required shape.
The nose needed a bit of work to make it look Boeing as well..still WIP on mine.
Other than that it's ok..