Hi Richard, out of interest the previous owner of my car fitted an American made South Wind petrol heater. This works extremely well. Its a ’50’s item which is right for my ’54 car. Here’s one on ebay (albeit in the states). I think John Gillard sourced and fitted it.
https://www.ebay.co.uk/itm/Stewart-Warner-South-Wind-Heater/173055836807?hash=item284aee8287:g:gMQAAOSwv-ZaQrqH:rk:40:pf:0
David
Non Member