What Harmonic Balancer would you run
I've been using the Pioneer internally balanced small block version SFI balancer/dampers on my 360's for many years and everything works & looks fine. Summit and other places carry their line, including this internally balanced SFI balancer/damper for a big block:
http://www.summitracing.com/parts/pio-872040/overview/make/dodge
I never cared for the "gimmicky" styles that have come out over the years. The bonded/sandwiched rubber has worked so well in so many applications for so many decades, street through race, and modern technology makes them even better.
They also have a "Street Performance" version:
http://www.summitracing.com/parts/pio-872039/overview/make/dodge