Well as luck would have it there are some fitment issues when I tried to install the headers. On the B-1 head there is a 90deg fitting installed below the 3&5, 4&6 ports. Using the 90an fitting it interferes with the tubes on the header & the same for the drivers side rear oil drain back fitting in the pan. It looks like It just needs a tighter fit to the block & pan. Is there a fix or a special shallow thread on the pipe thread side of the fitting to make it work????
I think I could use the bronze harware store stuff to get the shorter 90 & then go to the AN fitting but would be nice to have less joints to worry about leaking & I don't think they flow as well....

Any solutions???

V10

Why not go with a 45 or straight fitting on the head and use a 90 or another 45 degree fitting on the hose?

Im pretty sure those are coolant ports. I know some people doesnt bother running those at all. I would find out for sure if my application needs them or not.
Seems I recall a thread awhile back a few engine guru's saying that those doesnt make much diff either way....
If this would be the case, I would simply plug them off with a allen socket style Pipe NPT plug.
But I am not familar with that setup..So I would start by contacting the Koffels first