Well sence your going to have the heads off, you should put a new chain in. because all the accesories are going to be unbolted. a couple extra hours and you have a new chain on. I waited till 140K, and mine was soo soo soo!! loose! lol You wouldnt want that chain to break and bend some pushrods and beat those new heads up would you?
Buy some heads all complete with studs and plates on them, its a pain in the *** trying to figure out what to buy to fit with the things you got! I dont remember how many times I was on the phone or on the Forums
other things you'll want to get are
new spark plugs
new wires
new cap and rotar
probably some new vaccum lines, i had to replace some of mine
the price just keeps going up.
I spent $400 MORE on my modifications, that i didnt plan on spending. And I didnt get as much HP from that i planned on
. So good luck!