Exhaust Manifold Resurfacing?

[welch_41]

Guys, I need some help. I'm restoring a 66 C10 with a 250 and it's my first build. I'm learning as I go so bare with me if this is a dumb question. My exhaust manifold is pitted and needs to be resurfaced. My question is do I need to send in both the intake and exhaust manifolds to be resurfaced so that after they are bolted back together they will sit flush against the head? Or, do I only send in the pitted exhaust manifold for a shave and the tiny gap created between the exhaust manifold and head, because the intake is a little longer, will have no negative affect?
My gears are grinding in my head because I can't seem to find any answers for this...whats the use of google when it can't answer everything. Thanks for any help!