well the place i just ordered all my stuff from just called and said they couldnt get me know 84mm pistons because they wouldnt be ready until tomorrow. and thats when i paid to have everything shipped over night. so i just told him to go ahead and send the 84.5 pistons. the thing im wanting to know is how much will it cost to have the block bored to a 84.5 and would it still be a 2.0. thnaks for any answers