Mike, I suggest you download both the instruction booklets from the website, you can see then exactly what needs to change. Theres a fairing on the back of the D.V upper wing cut out and the panel between the guns differs so the cables can pass through.
If you compare step by step the assembly you will see how little really needs to be changed.
The big circular pulley you need to add on the control column needs 4 holes drilling through it too.
Keith