Check out crash tenders on this site there is loads of information about RC installations
just type "Crash tenders in the search box"

Its all new to me as well Neil, so far I've bought batteries that are too large to fit length wise in the boat so having to look at transverse fitment. Also putting in a new electric motor to replace the glow plug one it originally had. This has entailed changing the fitment angle to get it ti line up with the propshaft. However I'm slowly getting there and hope to have it on the water in the next two months.
Martyn

I will be very interested in seeing the layout of your R/c equipment. Hopefully I can gain some knowledge as this is all new to me, cheers Neil.