I'm reassembling my 73S to original. Although it will be a driver, I want to show it a couple of times this year (Rennfest in Atlanta is the biggest event.

The old batteries are shot. Performance products recommends 1 Optima battery installed on the driver's side, on it's side. I know this would significantly cut down on front compartment/battery box corrosion. However, for looks and performance, I would prefer two correct size, maintenance free batteries. The OEM batteries are the old cap/fill style. Any suggestions/help?