The valve seat isue seems to be limited to the early 5.7stuff,-09 and newer dont seem to have that isue, stock eagle/SRT/6.4 heads willl kick pretty much ANY Stock style LA/Mag heads *** so hard its not even funny,yeah i know some people might be able to get close porting some stock style smallblock castings but still that's just to get close to what the stock gen3 already does from the factory.
The gen3 heads are serious stuff with their straight raised ports there is just no way around that part.
As for the rods, who still uses stock rods in a new LA build that is anywhere near serious? rebuilding stock rods will cost more than getting a set of new rods that are also lighter.
Not arguing for the sake of arguing, some like their small blocks and some like a HEMI. We all have our preferences and we should build whatever fits our desire that's why we do this stuff!