"D or E" Mod set up

[Damo]

Hi Guys.
Currently building a Laydown Hydro to suit "D or E" motor. Can some one point me into the right direction for props, gear boxes and any specs that may help and speeds that I could expect. Here in Australia I will be one of the first people to make one so as you can imagine I'm going in a bit blind here.
Cheers
Damien