With the vented bonnets does the rain water go over the engine and does it do any harm.Thinking of getting one but it does not seem right.Can you recomend where to get one from.Thanks.
Most of the vendors on MRC can get you a carbon bonnet matey, just give em a call :Thumbs-up
I have a special one for sale. Also, the way the vent is situated it would be very rare that water would get in. See this thread
http://www.mazdarotaryclub.com/forums/showthread.php?t=25190