These are examples of the sort of unusual 'base' units available for sale, conversion or building to your specification :-


https://0501.nccdn.net/4_2/000/000/056/7dc/Mod_2-640x480.jpg
https://0501.nccdn.net/4_2/000/000/002/374/earlypod-341x289.jpg
https://0501.nccdn.net/4_2/000/000/06b/a1b/Mod_1-640x480.jpg
https://0501.nccdn.net/4_2/000/000/056/7dc/Mod_2-640x480.jpg
https://0501.nccdn.net/4_2/000/000/002/374/earlypod-341x289.jpg

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