Coolant in the oil - AGAIN!

I never use RTV with a gasket, they aren't meant to be used in conjuntion with each other. The RTV is a Room Temperature Vulcanizing form in place gasket meant to be used in place of a gasket. RTV tends to push the gasket out and will ooze into all kinds of places you don't want it to be, like the intake ports.

RTV is fine to use as china wall seals for milled applications such as yours and to squeeze a dab into the corners if using gaskets. I like the Magnum end seals best as they are rubber coated metal so they keep their shape and if you use some RTV to glue them in place they will work just fine on the non Magnum style intake and head. The draw back is you have to buy two sets of intake gaskets, one for the non Magnum and one for the Magnum. 3.9 Magnum V6 gaskets work though as the end seals are the same and that is all you are going to use anyway. This applies only to the Mopar gaskets that I'm aware of though.

Speaking of Mopar gaskets, the 360 set from MP or even just the regular Mopar gaskets are thicker and in my view superior to the Fel Pros and Mr. Gasket products.

There was a lot of good info in this thread from several posters, like the locating pins, manifold to head alignment, and dowel pin and bolt thread engagement and depth, always an area of concern when blocks and heads have been milled.