It is amazing how different the cars are from my 78 to your 81. You have put stuff where my car came with stuff (like self leveling suspension resivour) and I put stuff where you have a black box.

Are you goin to put the lift pump after the filters and fuel selector (Bruce style) or before the selector (and use 2 fuel pumps, Tony style)? I have done extra fuel pump and before the selector, but found the new pump would not pump veg oil, so used it for diesel.

And if you use the original tank for veg oil, I found I could get the filters to last longer i I used 2 one on the original fuel feed line, and one on the (original return) line and used that to feed as well, both into a T fitting. By using 2 in paralell they can get a lot more blocked and still feed enough oil to keep the car going at 110.

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cheers
Chris.
1990 landcruiser 80, 1HD-T two tank, copper pipe HE+ 20 plate FPHE, toyota solenoids and filters. 1978 300D, elsbett one tank system. 1979 300D veg oil/ diesel blend for now.