What do you think about replacing a 3100 lower intake manifold gasket? im more than confident enough, i guess what i'm really looking for is some tips from people who have done it and what are some things to look for, i know about the rocker arms needing to be twisted so i can pull out some of the push rods, but other than that i'd be going into this blind, anything else to look out for? thanks for the heads up. Peace!