Need information on 340 J heads

still for 300.00 if they were done properly than it's a good deal.What are you putting them on?

My 68 Dart has a built 360 in it, but I dont really know anything about what was done to it. It changed hands a couple of times, and that info was just kind of lost. I do know that it has headers, aftermarket intake, holly carb, a 3000 stall speed converter, electric fuel pump, and sounds pretty radical.

Guess I'll just have to start looking everything over and see what type of numbers I can find.

I saw these heads and just wondered if they were something special or not. The guy did not say what size valves were in them, and I didnt think to ask.