Can I get plug and play a set of ECZ-G heads on my 272?  I drove the truck to work and back Friday 40 miles each way and it ran like a piece of you know what.  It was miswiring  under load and got worse the closer I got to work and home.  Plugs and wires we replaced last year or 750 miles ago.  Pulled 3 plugs and they were covered with oil as I have to remove the headers to get the others out.  Not to mention I was not at all please to see oil on the plugs.  Assume the valve seals are leaking.  Wonder about doing the switch as I have located a set recently rebiult and figure it would be easier and about a cost effective to swap as to rebiuld my.  Thoughts??

Thanks

Warsaw, IN