hey guys im just goin to being my 347 rebuild and i was just wondering a few things 1) should i get a new timechain and cover? 2)should i get a high flow water pump or will a stock one be fine im buyin a new one just wondering if it should be high flow or not3) will i be able to use my stock harmonic balencer i think i can but im not to sure thats it for now i would appreciate any help u guys can offer thnx