340/416 Stroker Kit questions?

You will exceed the 500hp level with a mild cam with the right heads. So power won;t be a problem. I like to use a smaller dished piston rather than a flat top. I think over 10.5:1 static can be a problem if you are not doing all the machining operations to ensure the quench is excellent and the same on all 8 holes. Plus - you don't need it for your level. The Scat cast cranks are the cast ones to use. I would not use an Eagle cast. Have the assembly balanced by your shop. Otherwise it's pretty much buy what you can get cheap. SIR rods will hold up, H beams are heavier but stronger. Factory rods will work but need the bores nothced to clear.