I'm glad you know how to use the dictionary but had you re-read my post, you may see where I said "you FEEL that the issues MAY arise". It's a hypothetical theory issue. Mine is based on fact. People running PPE manifold or ricks manifolds or lml Manifolds in the 06-07 year in question have had no issues, again fact. You still have gone against your argument about different year/model trucks not being suitable subjects to the issues your bring up since you choose to tell a person with a lb7 what you MIGHT cause an issue.
If you would like to continue to pull words from the dictionary and posting their definition, you may go right ahead.
OK, post up some engineering reports, you won.