I've just blocked the heater outlet with a rubber plug at present
              for initial starts but was wondering the same thing.
              I think others have pulled the tube from the block and
              tapped and plugged the hole.


    Why not use this for cabin heat?????

    Rich



I was originally going to put a heater core in the cabin and feed the
water as per Mazda’s design.
I’ve now planned  to install a standard airbox from Vans with a feed
from heated air post radiator, like Dave Leonard’s in the photo. Can
Dave L comment?
In the end weight and simplicity seamed to win for me.

Steve Izett