Top Feed injector seals?

[R18silvia]

I purchased a greddy intake manifold for my s14 sr20det motor along with the greddy top feed injector fuel rail. I will be using the greddy denso 660cc injectors but i am not sure which lower injectors seals i must use. I tried the dsm style bottom seal but they were too big, searched a bit on the site and didnt find anything. since the sr20 traditionaly comes with sidefeed i couldnt go to a local autoparts store and ask for anything specific, like for a 95 se-r etc.

can anyone help...?

thanks