Your rudders are external and so (I think) you will have to drill a hole in the stern and build an attachment/fitting on one of the foils. Waterproofing the stern hole is always an issue. The below-deck anchor
for the drive has to be super duper - make sure you have plenty of room to do the lamination. And the tiller feedback reference is not waterproof - it has to be in a dry location too.
If you plan to use a wind
instrument in the set-up, look towards the g corrected sender, expensive but well worth the buck on any AWA sailed boat.
The on-tiller installation
is much easier. But sure where there is a good reason, cash & skill, any other solution can be had.