I have read the tech pages here and the best that i can work out, I need to find an a12gx manifold so that the sus will bolt on. no other manifold will fit.

righto well thats cool then
The twin sus, will they make much of a difference in performance. i currectly have a 2 stage progressive webber (downdraft) on a standard manifold.
Is it worth trying to hunt down an aftermarket manifold for this setup or just find a datto part to fit?

There is no 1600 manifold that fits an A12.

Nissan made several different 1600 engines. Twin-carbs were most commonly available on L16 engine. There was also a GA16, CA16, J16, E16, R16 and I think one more ...

hi folks

I just bought some twin su carbs. Not sure what they are from, but I think that they came from a 1600, as I got a 1600 and 1800 manifold with them. The previous owner seemed to think that they came from a 1600 but he seemed a bit loose on that.
Anyways, they also came with a pair of those little cromed intake trumpets. They look cool, but I cant think of much use for them as they dont provide any filtering. I think they will come in handy for braggin rights but thats about it.
Does anyone know of a setup that uses them and a filter. Something like and inline filter perhaps.
My car is gonna be used as a daily driver, when I am home to drvive it, with about 80% use on bitimum roads with the oterh 20% to be on country roads/gravel and the odd round of circle work (hehe).
One more question, the manifolds for the 1600/1800 are different than an a12. I know that the 1800 is an l series but not sure about the 1600. Will the 1600 manifold fit onto the a12 in a 1000?
thanks in advance.