Originally Posted by
herkman
Yes you are correct though most J models do not normally have them fitted.
However I belive that all j models are plumbed for externals and one only needs the pumps and hooked up.
You will hear stories of the J models not being suitable for externals but that too is incorrect as some aircraft in the USA have had them fitted at unit level.
Regards Col
There is a UK J model flying around Wiltshire with external tanks fitted.