I am wondering has anyone installed them and found the Quirks , like how much longer the pushrods needs to be than stock , will stock head bolt lengths work, those are the questions that I have of course lengths need to checked but they must know approx. how much longer the pushrods should be for a starting point. I will getting my pair ordered on my next trip to the machine shop. I have been waiting for these for a while ( like most of you) but do we really need to buy Trick flo bolts if we have new ARP's on the shelf ? Im so exited about getting them on I want it to be easy LOL .