Washer bottle, heater components

Hi all, to begin with my application is a 1954 XK120 SE OTS. This is the washer bottle that was installed in the car when we acquired it, from my searches it is apparent it is not the original bottle, does anyone know what its application is? The diameter of the bottle is 4 3/4 inches and has no narrowing at the neck.
Also the entire heating system with the exception of the fan switch was removed from the car at some point in its life and I would like to replace it. Does anyone know a good source for original used XK120 parts, or are we going to have to step up to the pump and buy new? Thanks for any input you may have.
Dave


That washer bottle looks like the one for XK150, but I’m no expert.
The main heater core is tough to find. Sometimes they come up on ebay.
There a lot of parts to the heating system besides the heater core, some of which are also used in saloons, so make a list. Try Jaguar Heaven in Stockton Calif.

The glass jar is the same as on Mk8 and 9.