LRDG Chevrolet 1533X2 Aero-screens

[Charlie Down]

On the thread below about throw arms on CMP trucks

http://www.mapleleafup.net/forums/sh...t=32655&page=2

The Trico S-609 in left and right hand setups has been identified as the most likely motor on this windscreen. Alternatively it could be the S-548 model which just had a longer spindle for the wiper arm.
To complete my research and allow me to finish my drawings, all I need now are some dimensions of the motor and mount.
I've attached a rough sketch to show the dimensions in question, from which I should be able to scale the rest.
Any help would be greatly appreciated and drawing posted when complete.
I presume (which is always dangerous!) that the main dimensions will be similar throughout the different models, with only details like mountings and spindles varying depending on model.
Any more photo's would also be helpful.