So I pulled the 289 out of my '65 to rebuild it. I bought a balanced rotating assembly from Eagle and am at the point where I am ready to install the balancer that came with the kit. It is a PowerBond balancer part number PB1070N. Was mocking up the timing chain cover and HB, noticing it looks larger than the original one and has four bolt connection to pullys vs the original three bolt that came off. Can I reuse my original HB or do I have to go the route of new dual V-belt pully and line up accessories in the following steps?