Flywheel question with pics

I couldn't pass on this even if it's wrong - picked it up for cheap (45 bucks). I'm new to the 4 speed scene and was told this is for an internally balanced 340 (I have a 70) ... I see it appears neutral balanced - was I told correctly ? When resurfaced, if it checks out neutral , it's a bolt on and go, right ? Car was converted to auto and I'm going back to 4 speed as original ........