Stu as far as the core goes have a look at heaters in japanese cars, I had a Smiths bullet heater given to me. It had a good bullet shell and workng fan but I coudn't find a core anywhere

, then I started checking out japanese heaters to see if I could find something close. I found that the heater core in an early Suzuki trayback 4WD was a perfect fit, the only mod I had to do was cut the Smiths housing so the Suzuki core's pipes could exit out the side and not the back like an original Smiths.
Mick
