injector swap

[dunes450r]

so i just sent my cores in on a set of injectors from DAP. i already have a reseal kit like this one: http://www.cumminsperformanceparts.com/ininsekit.html

but mine also has some rubber things that look like you put them over the injectors themselves?

my main question is: the kit has 3 different thicknesses of sealing washers and i'm unsure which ones to use?
any help is appreciated

[AHineman]

I'd run the thinnest set to help with haze.

[RCCUMMINS89]

Yep, run the thinnest.

[PToombs]

The o-rings, are they cut square? If so, they seal the injector body to the nut tp keep the crap out. I slide them on, then I use a small pick to push them into the gap.