I have a 1976 dodge 22' motorhome with a 360-2b. I have the regular timing marks on the front timing gear cover drivers side about 10 oclock position. This is impossable to see with out a mirror. The harmonic balancer only has one mark and atTDC #1 the mark on the balancer is about 60 degrees advance of the cast cover timing marks. My question, is there a timing bracket that atachs to cover bolts that yould match up with this balancer or should I physically find #1 TDC and scribe a line on the balancer to use existing cover casted marks.