>I would use 3/4" or 1" ID  hose to hook it up. I would use formed 90 degree
silicone hose segments and two hose clamps at each junction. So you save time
and money on the installation, to spend on the ducting to the cores which is
more important anyway.
>
> Lynn E. Hanover
>

I was looking at the P-51 Mustang's cooling system. It is done with aluminum
tubing and hose segments double clamped at the junction. If it is good for
the proven Mustang, should be good for the rotary.
Bulent