B&G don't have in stock any of these old longitudinal impeller Kits.
Can somebody tell me where to find this item perhaps in some remotechandlery in a forgotten corner of the world or in a spare parts box of a retired sailor ? This would be very helpful to my Swan 371 Faye 371/030 1980.
Couple of suggestions, but you may have tried them already,
Tinley Electronics in the UK, and Myles Electronics in the USA. Both specialise in the repair of older B&G gear, and carry some stock of old parts