Can you see if there has been any work done to my heads?

Thanks for all the info guys. I do add a little led additive every time I put gas in it. I think I will let them stay on for now and If I need to remove them I will post pics and take it from there. Dont fix what aint broken comes to mind. Also I need to save up some money for other projects. But again, I got good advice and learned a lot. Much appreciated.
take into mind that cast iron is very costly to port due to the time it takes to work them.

and good, keep up on the lead. And the old addage about fixing stuff holds true